Quantum metrology with nonclassical states of atomic ensembles

Abstract

Quantum technologies exploit entanglement to revolutionize computing, measurements, and communications. This has stimulated the research in different areas of physics to engineer and manipulate fragile many-particle entangled states. Progress has been particularly rapid for atoms. Thanks to the large and tunable nonlinearities and the well developed techniques for trapping, controlling and counting, many groundbreaking experiments have demonstrated the generation of entangled states of trapped ions, cold and ultracold gases of neutral atoms. Moreover, atoms can couple strongly to external forces and light fields, which makes them ideal for ultra-precise sensing and time keeping. All these factors call for generating non-classical atomic states designed for phase estimation in atomic clocks and atom interferometers, exploiting many-body entanglement to increase the sensitivity of precision measurements. The goal of this article is to review and illustrate the theory and the experiments with atomic ensembles that have demonstrated many-particle entanglement and quantum-enhanced metrology.

76 pages, 40 figures, 1 table, 603 references. Some figures bitmapped at 300 dpi to reduce file size

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• Manipulating growth and propagation of correlations in dipolar multilayers: From pair production to bosonic Kitaev models
• Collective randomized measurements in quantum information processing
• A control hardware based on a field programmable gate array for experiments in atomic physics
• Control of Quantum Dynamics of Electron Transfer in Molecular Loop Structures: Spontaneous Breaking of Chiral Symmetry under Strong Decoherence
• Searches for exotic spin-dependent interactions with spin sensors
• Floquet generation of magnonic NOON state
• Estimation of a parameter encoded in the modal structure of a light beam: a quantum theory
• Enhanced nonlinear quantum metrology with weakly coupled solitons and particle losses
• Quantum spin fluctuations in dynamical quantum phase transitions
• Long-range interacting Stark many-body probes with Super-Heisenberg precision
• Many-body quantum dynamics of an asymmetric bosonic Josephson junction
• Observing spin-squeezed states under spin-exchange collisions for a second
• Heisenberg-limited spin squeezing in coupled spin systems
• Continuous field tracking with machine learning and steady state spin squeezing
• Squeezed Ground States in a Spin-1 Bose-Einstein Condensate
• Spinor Bose-Einstein Condensate Interferometer within the Undepleted Pump Approximation: Role of the Initial State
• Time-dependent atomic magnetometry with a recurrent neural network
• Fast computation of spherical phase-space functions of quantum many-body states
• Quantum metrology with one auxiliary particle in a correlated bath and its quantum simulation
• Signatures of superradiance as a witness to multipartite entanglement
• Multiparameter quantum sensing and magnetic communications with a hybrid dc and rf optically pumped magnetometer
• Generation and storage of spin squeezing via learning-assisted optimal control
• Genuine multipartite nonlocality with causal-diagram postselection
• Taming quantum systems: A tutorial for using shortcuts-to-adiabaticity, quantum optimal control, and reinforcement learning
• Self-testing of binary Pauli measurements requiring neither entanglement nor any dimensional restriction
• Quantum metrology with a continuous-variable system
• Single-Particle Decoherence Can Improve Spin-Squeezing Generated In Collective Dynamics
• Efficient detection of inhomogeneous magnetic fields from a single spin with Dicke states
• Minutes-scale Schr{ö}dinger-cat state of spin-5/2 atoms
• Frequentist Parameter Estimation with Supervised Learning
• Certifying the quantum Fisher information from a given set of mean values: a semidefinite programming approach
• Strict hierarchy of optimal strategies for global estimations: Linking global estimations with local ones
• Multiparticle Entanglement Dynamics of Quantum Chaos in a Bose-Einstein condensate
• Continuous-variable quantum sensing of a dissipative reservoir
• Squeezed superradiance enables robust entanglement-enhanced metrology even with highly imperfect readout
• Noisy quantum gyroscope
• Hierarchies of Frequentist Bounds for Quantum Metrology: From Cramér-Rao to Barankin
• Quantum Zeno effect under continuous spin noise measurement in a quantum dot-micropillar cavity
• Theory of Compression Channels for Postselected Quantum Metrology
• Detection of entangled states supported by reinforcement learning
• Many-Body Entanglement in Short-Range Interacting Fermi Gases for Metrology
• Classical-noise-free sensing based on quantum correlation measurement
• Creating triple-NOON states with ultracold atoms via chaos-assisted tunneling
• Generation of spin squeezing via a fully quantum degenerate parametric amplifier
• Number-phase uncertainty relations and bipartite entanglement detection in spin ensembles
• Spin Squeezing of a Bose-Einstein Condensate via Quantum Non-Demolition Measurement for Quantum-Enhanced Atom Interferometry
• Double-port measurements for robust quantum optical metrology
• Adiabatic Sensing Technique for Optimal Temperature Estimation using Trapped Ions
• Enhancing quantum state tomography via resource-efficient attention-based neural networks
• Regular and bistable steady-state superradiant phases of an atomic beam traversing an optical cavity
• Squeezing the angular momentum of an ensemble of complex multi-level atoms
• Control-enhanced quantum metrology under Markovian noise
• Family of CV states of definite parity and their metrological power
• Data processing over single-port homodyne detection to realize super-resolution and super-sensitivity
• Quantum metrology in the finite-sample regime
• Quantum Algorithms for Inverse Participation Ratio Estimation in multi-qubit and multi-qudit systems
• Genuine multipartite entanglement in a one-dimensional Bose-Hubbard model with frustrated hopping
• Remote sensing and faithful quantum teleportation through non-localized qubits
• Mesoscopic quantum superposition states of weakly-coupled matter-wave solitons
• Robust Macroscopic Schrödinger's Cat on a Nucleus
• Quantum delocalization on correlation landscape: The key to exponentially fast multipartite entanglement generation
• Coherence properties of highly-excited motional states of a trapped ion
• Criteria to detect genuine multipartite entanglement using spin measurements
• Functional completeness of planar Rydberg blockade structures
• Active Learning of Quantum System Hamiltonians yields Query Advantage
• Beyond one-axis twisting: Simultaneous spin-momentum squeezing
• Spin squeezing in a spin-orbit coupled Bose-Einstein condensate
• Controlling chaos in the quantum regime using adaptive measurements
• Quantum Fluctuation Dynamics of Dispersive Superradiant Pulses in a Hybrid Light-Matter System
• Technologies for the ELGAR large scale atom interferometer array
• Generation and structuring of multipartite entanglement in Josephson parametric system
• Decay of quantum sensitivity due to three-body loss in Bose-Einstein condensates
• Multipartite entanglement of the topologically ordered state in a perturbed toric code
• Squeezing multilevel atoms in dark states via cavity superradiance
• Clock precision beyond the Standard Quantum Limit at $10^{-18}$ level
• GHZ protocols enhance frequency metrology despite spontaneous decay
• Variational quantum eigensolver with linear depth problem-inspired ansatz for solving portfolio optimization in finance
• Limits of noisy quantum metrology with restricted quantum controls
• Detecting the dimensionality of genuine multi-particle entanglement
• Atomic clock locking with Bayesian quantum parameter estimation: scheme and experiment
• Generation of scalable many-body Bell correlations in spin chains with short-range two-body interactions
• General classification of qubit encodings in ultracold diatomic molecules
• Quantifying measurement-induced quantum-to-classical crossover using an open-system entanglement measure
• Generating entangled states from coherent states in circuit-QED
• Spectral Engineering of Cavity-Protected Polaritons in an Atomic Ensemble with Controlled Disorder
• Distributed quantum sensing with optical lattices
• All-optical generation of deterministic squeezed Schrödinger-cat states
• Noiseless linear amplification in quantum target detection using Gaussian states
• Achieving spin-squeezed states by quench dynamics in a quantum chain
• Detecting Einstein-Podolsky-Rosen steering in non-Gaussian spin states from conditional spin-squeezing parameters
• Faraday imaging induced squeezing of a double-well Bose-Einstein condensate
• Generating nonlinearities from conditional linear operations, squeezing and measurement for quantum computation and super-Heisenberg sensing
• Noisy distributed sensing in the Bayesian regime
• Dissipative quantum state preparation and metastability in two-photon micromasers
• Multi-parameter estimation with multi-mode Ramsey interferometry
• Compound atom-ion Josephson junction: Effects of finite temperature and ion motion
• Homodyne detection of non-Gaussian quantum steering
• Analysis of spin-squeezing generation in cavity-coupled atomic ensembles with continuous measurements
• Quantum Metrology with Delegated Tasks
• Frequency estimation under non-Markovian spatially correlated quantum noise: Restoring superclassical precision scaling
• Interplay between time and energy in bosonic noisy quantum metrology
• Unified entropies and quantum speed limits for nonunitary dynamics
• Bipartite nonlocality with a many-body system
• Nonlocality enhanced precision in quantum polarimetry via entangled photons
• Concurrent spin squeezing and light squeezing in an atomic ensemble
• Observations of coherence de Broglie waves
• Quantum Wasserstein distance based on an optimization over separable states
• Spin squeezing in internal bosonic Josephson junctions via enhanced shortcuts to adiabaticity
• Quantifying Computational Advantage of Grover's Algorithm with the Trace Speed
• Validating phase-space methods with tensor networks in two-dimensional spin models with power-law interactions
• Asymptotic optimality of twist-untwist protocols for Heisenberg scaling in atomic interferometry
• Dynamics of monitored SSH Model in Krylov Space: From Complexity to Quantum Fisher Information
• Entanglement transitivity problems
• Variational quantum state preparation for quantum-enhanced metrology in noisy systems
• Global Variational Quantum Circuits for Arbitrary Symmetric State Preparation
• Impacts of random filling on spin squeezing via Rydberg dressing in optical clocks
• Generating Macroscopic Superpositions with Interacting Bose-Einstein Condensates: Multi-Mode Speed-Ups and Speed Limits
• Classical (and Quantum) Heuristics for Gravitational Wave Detection
• Bilayer crystals of trapped ions for quantum information processing
• Superadiabatic generation of cat states in bosonic Josephson junctions under particle losses
• Quantum Optimal Control of Squeezing in Cavity Optomechanics
• Stochastic approach for quantum metrology with generic Hamiltonians
• Monitoring variations of refractive index via Hilbert-Schmidt speed and applying this phenomenon to improve quantum metrology
• Speeding Up Squeezing with a Periodically Driven Dicke Model
• Collapse of a quantum vortex in an attractive two-dimensional Bose gas
• Enhancing Sensitivity of an Atom Interferometer to the Heisenberg Limit using Increased Quantum Noise
• Entanglement Criteria Based on Quantum Fisher Information
• Noisy atomic magnetometry with Kalman filtering and measurement-based feedback
• Squeezing oscillations in a multimode bosonic Josephson junction
• Stabilizer Entanglement Distillation and Efficient Fault-Tolerant Encoders
• Achieving metrological limits using ancilla-free quantum error-correcting codes
• Stochastic waveform estimation at the fundamental quantum limit
• Dynamical low-noise microwave source for cold-atom experiments
• Universal equilibration dynamics of the Sachdev-Ye-Kitaev model
• Measurement-induced multipartite-entanglement regimes in collective spin systems
• Enhancing Gaussian quantum metrology with position-momentum correlations
• Determination of the asymptotic limits of adaptive photon counting measurements for coherent-state optical phase estimation
• Extracting work from coherence in a two-mode Bose-Einstein condensate
• Time-local optimal control for parameter estimation in the Gaussian regime
• Gaussian-state Ansatz for the non-equilibrium dynamics of quantum spin lattices
• Many-body quantum lock-in amplifier
• Generation and decoherence of soliton spatial superposition states
• Improved absolute clock stability by the joint interrogation of two atomic states
• Quantum metrology of rotations with mixed spin states
• Characterization of Errors in Interferometry with Entangled Atoms
• Experimental Test of Nonlocality Limits from Relativistic Independence
• Rapid production of many-body entanglement in spin-1 atoms via cavity output photon counting
• Dephasing-rephasing dynamics of one-dimensional tunneling quasicondensates
• Fast Generation of High-Fidelity Mechanical Non-Gaussian States via Additional Amplifier and Photon Subtraction
• Non-Markovian effect on quantum optical metrology under dissipative environment
• Giant-cavity-based quantum sensors with enhanced performance
• Optimal atomic interferometry robust to detection noise using spin-1 atomic condensates
• Metrological advantage at finite temperature for Gaussian phase estimation
• Quantum-enhanced differential atom interferometers and clocks with spin-squeezing swapping
• Exploring the role of asymmetric-pulse modulation in quantum thermal machines and quantum thermometry
• Spin noise spectroscopy of a noise-squeezed atomic state
• Rephasing efficiency of sequences of phased pulses in spin-echo and light-storage experiments
• Quantum metrology based on symmetry-protected adiabatic transformation: Imperfection, finite time duration, and dephasing
• Accelerated creation of NOON states with ultracold atoms via counterdiabatic driving
• Estimating energy levels of a three-level atom in single and multi-parameter metrological schemes
• Cyclic nonlinear interferometry with entangled non-Gaussian spin states
• Optimizing one-axis twists for variational Bayesian quantum metrology
• Modular-value-based metrology with spin coherent pointers
• Revisiting the impact of dissipation on time-reversed one-axis-twist quantum-sensing protocols
• Restoring metrological quantum advantage of measurement precision in noisy scenario
• Stochastic optimal control formalism for an open quantum system
• Entanglement transitions induced by quantum-data collection
• Mixing thermal coherent states for precision and range enhancement in quantum thermometry
• Time-frequency metrology with two single-photon states: phase space picture and the Hong-Ou-Mandel interferometer
• Photon-mediated correlated hopping in a synthetic ladder
• Variational generation of spin squeezing on one-dimensional quantum devices with nearest-neighbor interactions
• Relating relative Rényi entropies and Wigner-Yanase-Dyson skew information to generalized multiple quantum coherences
• Adiabatic entangling gate of Bose-Einstein condensates based on the minimum function
• Diagnosing Quantum Phases Using Long-Range Two-Site Quantum Resource Behaviors
• Fundamental limit of phase coherence in two-component Bose-Einstein condensates
• Measure of the density of quantum states in information geometry and its application in the quantum multi-parameter estimation
• Cavity-enhanced magnetometer with a spinor Bose-Einstein condensate
• Effects of local decoherence on quantum critical metrology
• Non-linear Bragg trap interferometer
• Deterministic preparation of supersinglets with collective spin projections
• Covariant Quantum Error-Correcting Codes with Metrological Entanglement Advantage
• Spin squeezing in symmetric multiqubit states with two distinct Majorana spinors
• Partitioning dysprosium's electronic spin to reveal entanglement in non-classical states
• Exploring spin-squeezing in the Mott insulating regime: role of anisotropy, inhomogeneity and hole doping
• Zero-field spin noise spectrum of an alkali vapor with strong spin-exchange coupling
• Twist-and-turn dynamics of spin squeezing in bosonic Josephson junctions: Enhanced shortcuts-to-adiabaticity approach
• Alternatives of entanglement depth and metrological entanglement criteria
• Experimental quantum-enhanced response function estimation
• Intertwining of lasing and superradiance under spintronic pumping
• Experimental demonstration of phase estimation advantage in presence of depolarizing noise by using coherent measurements
• Classical and Quantum Orbital Correlations in the Molecular Electronic States
• Few-to-many vortex states of density-angular-momentum coupled Bose-Einstein condensates
• Symmetric quantum states: a review of recent progress
• Multimode N00N states in driven atomtronic circuits
• Entropic uncertainty relations and quantum Fisher information of top quarks in a large hadron collider
• A hybrid method of generating spin-squeezed states for quantum-enhanced atom interferometry
• Fast generation of time-stationary spin-1 squeezed states by non-adiabatic control
• Greenberger-Horne-Zeilinger state generation in qubit-chains via a single $\pi /2$-pulse
• Symmetry oscillations in strongly interacting one-dimensional mixtures
• Non-stationary dynamics and dissipative freezing in squeezed superradiance
• Reconstructing the spatial structure of quantum correlations in materials
• Supersensitive estimation of the coupling rate in cavity optomechanics with an impurity-doped Bose-Einstein condensate
• Quantum field theory for multipolar composite bosons with mass defect and relativistic corrections
• An alkali-referenced vector spectrum analyzer for visible-light integrated photonics
• Decoherence effects in quantum nondemolition measurement induced entanglement between Bose-Einstein condensates
• Optimal Ramsey interferometry with echo protocols based on one-axis twisting
• Introduction to quantum entanglement in many-body systems
• Frustration Elimination and Excited State Search in Coherent Ising Machines
• Two-mode Squeezing in Floquet Engineered Power-law Interacting Spin Models
• A generalized effective spin-chain formalism for strongly interacting spinor gases in optical lattice
• Dissipative stabilization of maximal entanglement between non-identical emitters via two-photon excitation
• Control and amplification of Bloch oscillations via photon-mediated interactions
• Assisted metrology and preparation of macroscopic superpositions with split spin-squeezed states
• Classes of Gaussian States for Squeezing Estimation
• Certification of genuine multipartite entanglement in spin ensembles with measurements of total angular momentum
• Efficient verification of arbitrary entangled states with homogeneous local measurements
• Extracting Many-Body Quantum Resources within One-Body Reduced Density Matrix Functional Theory
• Variational quantum simulation of long-range interacting systems
• Sculpting bosonic states with arithmetic subtractions
• Metrological usefulness of entanglement and nonlinear Hamiltonians
• Measurement-induced entanglement transition in chaotic quantum Ising chain
• Achieving Heisenberg scaling by probe-ancilla interaction in quantum metrology
• Exact nonequilibrium quantum observable statistics: A large-deviation approach
• Combining Squeezing and Transition Sensitivity Resources for Quantum Metrology by Asymmetric Non-Linear Rabi model
• Enhancing Quantum Metrology by Quantum Resonance Dynamics
• tqix: A toolbox for Quantum in X: Quantum measurement, quantum tomography, quantum metrology, and others
• Quantum Estimation in Strong Fields: in situ ponderomotive sensing
• Driven quadrature and spin squeezing in a cavity-coupled ensemble of two-level states
• Generic Two-Mode Gaussian States as Quantum Sensors
• Trapping ${}^{171}$Yb Atoms into a One-Dimensional Optical Lattice with a Small Waist
• Single Spin Detection with Entangled States
• Suppressing nonadiabatic transitions during adiabatic generation of highly entangled states in bosonic Josephson junctions
• Entanglement-based 3D magnetic gradiometry with an ultracold atomic scattering halo
• Delocalization and heat transport in multidimensional trapped ion systems
• Quantum parameter estimation of nonlinear coupling in trilinear Hamiltonian with trapped ions
• Multiple quantum NMR in solids as a method of determination of Wigner-Yanase skew information
• Toward a quantum-enhanced strontium optical lattice clock at INRIM
• Bounding the fidelity of quantum many-body states from partial information
• Proposal of ensemble qubits with two-atom decay
• Spin Squeezing with Itinerant Dipoles: A Case for Shallow Lattices
• Enhancing Dynamic Range of Sub-Quantum-Limit Measurements via Quantum Deamplification
• Frequency-resolved Purcell effect for the dissipative generation of steady-state entanglement
• Toward Axion Signal Extraction in Semiconductor Spin Qubits Via Spectral Engineering
• Remote Phase Sensing by Coherent Single Photon Addition
• Inherent quantum resources in stationary spin chains
• Quantum enhanced distributed phase sensing with a truncated SU(1,1) interferometer
• Entanglement Dynamics between Ising Spins and a Central Ancilla
• Attainability of the Holevo-Cramér-Rao bound for two-qubit 3D magnetometry
• Quantum-enhanced joint estimation of phase and phase diffusion
• Universal bounds for quantum metrology in the presence of correlated noise
• Two-parameter estimation with three-mode NOON state in a symmetric three-well system
• QuanEstimation.jl: An open-source Julia framework for quantum parameter estimation
• Generalized measurements on qubits in quantum randomness certification and expansion
• Sensing multiatom networks in cavities via photon-induced excitation resonance
• Optimal estimation of conjugate shifts in position and momentum by classically correlated probes and measurements
• Dynamic quantum-enhanced sensing without entanglement in central spin systems
• Qubit-assisted quantum metrology under a time-reversal strategy
• Can multipartite entanglement be characterized by two-point connected correlation functions ?
• Enhancing precision of atomic clocks by tuning disorder in accessories
• Coherence Properties of the Repulsive Anyon-Hubbard Dimer
• Loading atoms from a large magnetic trap to a small intra-cavity dipole trap
• Generalized squeezing as a witness
• Role of indistinguishability in interferometric phase estimation
• Topological quantum thermometry
• Parameter estimation for quantum jump unraveling
• Non-stabilizerness in quantum-enhanced metrological protocols
• Relativistic quantum thermometry through a moving sensor
• Dispersion relations and self-localization of quasiparticles in coupled elongated Bose-Einstein condensates
• High-Precision Frequency-Controlled Optical Phase Shifter with Acousto Optic Devices
• Driven-dissipative four-mode squeezing of multilevel atoms in an optical cavity
• Universal time scalings of sensitivity in Markovian quantum metrology
• Entanglement Witnessing for Lattice Gauge Theories
• Quantum Non-Demolition Measurement on the Spin Precession of Laser-Trapped ${}^{171}$Yb Atoms
• Heisenberg-Limited Spin-Mechanical Gravimetry
• Dephasing-tolerant quantum sensing for transverse magnetic fields with spin qudits
• Quantum plasmonic sensing by Hong-Ou-Mandel interferometry
• Coined quantum walks on the line: Disorder, entanglement, and localization
• Quantum Vector Signal Analyzer: Wideband Electric Field Sensing via Motional Raman Transitions
• Mutual Information Bounded by Fisher Information
• Canceling the cavity length induced phase noise in an optical ring cavity for phase shift measurement and spin squeezing
• Relative Phase Distribution and the Precision of Optical Phase Sensing in Quantum Metrology
• Non-Gaussian generalized two-mode squeezing: applications to two-ensemble spin squeezing and beyond
• High-dimentional Multipartite Entanglement Structure Detection with Low Cost
• Detecting Macroscopic Indefiniteness of Cat States in Bosonic Interferometers
• Learning quantum dissipation by the neural ordinary differential equation
• Effects of counter-rotating-wave terms on the noisy frequency estimation
• Extreme expected values and their applications in quantum information processing
• Optimizing quantum sensing networks via genetic algorithms and deep learning
• Optimal Settings For Amplification And Estimation Of Small Effects In Postselected Ensembles
• Probing quantum entanglement from magnetic-sublevels populations: beyond spin squeezing inequalities
• Saturating the one-axis twisting quantum Cramér-Rao bound with a total spin readout
• Coherence-enhanced single-qubit thermometry out of equilibrium
• Optimal function estimation with photonic quantum sensor networks
• Detection of Bell correlations at finite temperature from matter-wave interference fringes
• Quantum Metrology via Floquet-Engineered Two-axis Twisting and Turn Dynamics
• Quantum metrology enhanced by the $XY$ spin interaction in a generalized Tavis-Cummings model
• Critical Quantum Sensing: a tutorial on parameter estimation near quantum phase transitions
• $N$-photon bundles emission in high-spin Jaynes-Cummings model
• Generating multiparticle entangled states by self-organization of driven ultracold atoms
• INTENTAS -- An entanglement-enhanced atomic sensor for microgravity
• Hong-Ou-Mandel Interference in a temporal-average-inversion-symmetric chain
• Annual-modulation fingerprint of the axion wind induced sideband triplet in quantum dot spin qubit sensors
• Modeling local decoherence of a spin ensemble using a generalized Holstein-Primakoff mapping to a bosonic mode
• Bures geodesics and quantum metrology
• Engineering tunable decoherence-free subspaces with collective atom-cavity interactions
• Preparing matrix product states via fusion: constraints and extensions
• Perturbation-theory approach for predicting vibronic selectivity by entangled-photon-pair absorption
• Distributed multi-parameter quantum metrology with a superconducting quantum network
• Symmetry: a fundamental resource for quantum coherence and metrology
• Multipartite entanglement structure of monitored quantum circuits
• Two dimensional arrays of Bose-Einstein condensates: interference and stochastic collapse dynamics
• Spin self-organization in an optical cavity facilitated by inhomogeneous broadening
• Indefinite Time Directed Quantum Metrology
• Sub-Poissonian atom-number distributions by means of Rydberg dressing and electromagnetically induced transparency
• Heisenberg-limited Bayesian phase estimation with low-depth digital quantum circuits
• Quantum metrology of a structured reservoir
• Detecting entanglement from macroscopic measurements of the electric field and its fluctuations
• Entanglement generation via single-qubit rotations in a torn Hilbert space
• Laser Control of Singlet-Pairing Process in an Ultracold Spinor Mixture
• Quantum dichotomies and coherent thermodynamics beyond first-order asymptotics
• Quantum nondemolition measurement operator with spontaneous emission
• Robust phase-controlled gates for scalable atomic quantum processors using optical standing waves
• Rapid cooling of the in-plane motion of two-dimensional ion crystals in a Penning trap to millikelvin temperatures
• Generation of Spin Cat States in an Engineered Dicke Model
• Achieving Heisenberg limit under General Markov Noise without Ancilla
• Unfolding system-environment correlation in open quantum systems: Revisiting master equations and the Born approximation
• Quantum sensing with ultracold simulators in lattice and ensemble systems: a review
• Many-body quantum metrology with scalar bosons in a single potential well
• Hybrid approximation approach to generation of atomic squeezing with quantum nondemolition measurements
• Upgrading Quantum Metrology by Combined Sensitivity Resources in Mixed Linear-Nonlinear Light-Matter Interactions with Bias Field
• A prototype differential atom interferometer for fundamental physics
• Dynamical multipartite entanglement in a generalized Tavis-Cummings model with XY spin interaction
• Joint Estimation of a Two-Phase Spin Rotation beyond Classical Limit
• Observations of near-perfect nonclassical correlation using coherent light
• Atom-light entanglement for precise field sensing in the optical domain
• Characterizing the Multipartite Entanglement Structure of Non-Gaussian Continuous-Variable States with a Single Evolution Operator
• Quantum Error Correction in the Lowest Landau Level
• Multipartite Entanglement and Quantum Sensing in a Spin-5/2 Heisenberg Molecular Iron(III) Triangle
• Critically-enhanced spin-nematic squeezing and entanglement in dipolar spinor condensates
• Linear semi-infinite programming approach for entanglement quantification
• Coherently driven photonic de Broglie Sagnac interferometer
• Preparing magnonic non-Gaussian states by adding a single magnon onto Gaussian states
• Even- and odd-orthogonality properties of the Wigner D-matrix and their metrological applications
• Charging a quantum spin network towards Heisenberg-limited precision
• Randomized measurements for multi-parameter quantum metrology
• Quantum Sensing Using Atomic Clocks for Nuclear and Particle Physics
• Many-Body Entanglement in Solid-State Emitters
• Optimal quantum sensing of the nonlinear bosonic interactions using Fock states
• Geometric Manipulation of a Decoherence-Free Subspace in Atomic Ensembles
• Solution of inverse problem for Gross-Pitaevskii equation with artificial neural networks
• Quantum Sensing with Topological-Paired Bound States
• Meta-Designing Quantum Experiments with Language Models
• Entangled states from sparsely coupled spins for metrology with neutral atoms
• Quantum Advantage: A Single Qubit's Experimental Edge in Classical Data Storage
• Quantum Vector DC Magnetometry via Selective Phase Accumulation
• Saturation of Quantum Cramer-Rao Bounds for Distributed Sensing via Error Sensitivity in SU(1,1)-SU(m) Interferometry
• Supersymmetry-assisted high-fidelity ground state preparation of single neutral atom in an optical tweezer
• Single atom counting in a two-color magneto-optical trap
• Quantum Chaos, Randomness and Universal Scaling of Entanglement in Various Krylov Spaces
• Exact steady state of quantum van der Pol oscillator: critical phenomena and enhanced metrology
• Dissipative phase transition: from qubits to qudits
• Universal quantum control over bosonic network
• Signatures of Integrability and Exactly Solvable Dynamics in an Infinite-Range Many-Body Floquet Spin System
• Unveiling Vacuum Fluctuations and Nonclassical States with Cavity-Enhanced Tripartite Interactions
• Preparing spin-squeezed states in Rydberg atom arrays via quantum optimal control
• Sub-shot-noise interferometry with two-mode quantum states
• Quantum Measurement Encoding for Quantum Metrology
• Monogamy-of-entanglement-inspired protocol to quantify bipartite entanglement using spin squeezing
• Spin-induced multipartite steady-state entanglement of motional modes in hexagonal boron nitride membranes
• Optimal and robust experiment design for quantum state tomography of star-topology register
• Research progress of artificial intelligence empowered quantum communication and quantum sensing systems
• Low-temperature Quantum Metrology Enhanced by Strong Couplings
• $su(d)$-squeezing and many-body entanglement geometry in finite-dimensional systems
• Role of seeding in the generation of polarization squeezed light by atomic Kerr medium
• Quantum Metrology in the Ultrastrong Coupling Regime of Light-Matter Interactions: Leveraging Virtual Excitations without Extracting Them
• Non-Gaussian Dissipative Quantum Thermometry Beyond Gaussian Bounds
• Resource theory of dephasing estimation in multiqubit systems
• Entanglement criteria for two strongly interacting ensembles
• Uncertainty relations between quantum Fisher information and entanglement monotones
• Nonclassical states of light in a nonlinear Michelson interferometer
• Topological Sensing in the Dynamics of Quantum Walks with Defects
• Dynamics of quantum resources in regular and Majorana fermion systems
• Measurement-Based Entanglement Distillation and Constant-Rate Quantum Repeaters over Arbitrary Distances
• Scalable Generation of Massive Schrödinger Cat States via Quantum Tunneling
• Quantum Interference in Atomic Systems
• Effect of Inter-Well Interactions on Non-Linear Beam Splitters for Matter-Wave Interferometers
• Cavity polariton blockade for non-local entangling gates with trapped atoms
• Quantum-limited generalized measurement for tunnel-coupled condensates
• Hybrid spin-phonon architecture for scalable solid-state quantum nodes
• A quantum-chaotic cesium-vapor magnetometer
• Multiparameter quantum metrology using strongly interacting spin systems
• Non-commutativity as a Universal Characterization for Enhanced Quantum Metrology
• Quantum Signatures of Topological Phase in Bosonic Quadratic System
• Uncertainty Relations in Pre- and Post-Selected Systems
• Stability of macroscopic spin ensembles against inhomogeneous dephasing
• Deterministic control of photonic de Broglie waves using coherence optics: Coherence de Broglie waves
• Superradiant-like dynamics by electron shuttling on a nuclear-spin island
• Robust Control and Entanglement of Qudits in Neutral Atom Arrays
• Iterative optimization in quantum metrology and entanglement theory using semidefinite programming
• Error-disturbance uncertainty relations in Faraday measurements
• Globally optimal interferometry with lossy twin Fock probes
• Bayesian and frequentist estimators for the transition frequency of a driven two-level quantum system
• The time-dependent quantum harmonic oscillator: a pedagogical approach via the Lewis-Riesenfeld dynamical invariant method
• Pseudochaotic Many-Body Dynamics as a Pseudorandom State Generator
• Conditional Entanglement Amplification via Non-Hermitian Superradiant Dynamics
• Even-parity precession protocol for detecting nonclassicality and entanglement
• Complete characterisation of state conversions by work extraction
• Efficient inference of quantum system parameters by Approximate Bayesian Computation
• Approaching the double-Heisenberg scaling sensitivity in the Tavis-Cummings model
• Minimal-error quantum state discrimination versus robustness of entanglement:More indistinguishability with less entanglement
• Estimating quantum Markov chains using coherent absorber post-processing and pattern counting estimator
• Reductive Quantum Phase Estimation
• Quantum Rabi interferometry of motion and radiation
• Generalized Parity Measurements and Efficient Large Multi-component Cat State Preparation with Quantum Signal Processing
• Magnetic Field Detection Using a Two-Qubit System Under Noisy Heisenberg Interaction
• Bosonic Entanglement and Quantum Sensing from Energy Transfer in two-tone Floquet Systems
• Macroscopic quantum teleportation with ensembles of qubits
• Exact Solvability Of Entanglement For Arbitrary Initial State in an Infinite-Range Floquet System
• Proposal for a Bell Test with Entangled Atoms of Different Mass
• Towards scalable active steering protocols for genuinely entangled state manifolds
• Few-Photon Fluorescence from Ultracold Bosons in an Optical Cavity
• How many lives does Schrödinger's cat have?
• Phase Transitions in Light-Matter Systems for Quantum Sensing
• Universal quantum computation and quantum error correction with ultracold atomic mixtures
• Lindblad estimation with fast and precise quantum control
• A protocol to create a multi-particle entangled state for quantum-enhanced sensing
• Manifold formation and crossings of ultracold lattice spinor atoms in the intermediate interaction regime
• Optimizing lossy state preparation for quantum sensing using Hamiltonian engineering
• Bell correlations between momentum-entangled pairs of ${}^4{\text{He}}^{\ast }$ atoms
• Twist-and-store entanglement in bimodal and spin-1 Bose-Einstein condensates
• Many-spin entanglement in multiple quantum NMR with a dipolar ordered initial state
• Nonequilibrium Critical Scaling of a Squeezing Phase Transition
• Explicit noise and dissipation operators for quantum stochastic thermodynamics
• Semi-classical geometric tensor in multiparameter quantum information
• State-insensitive wavelengths for light shifts and photon scattering from Zeeman states
• Learning quantum symmetries with interactive quantum-classical variational algorithms
• Cooperatively-enhanced precision of hybrid light-matter sensors
• Coherent Generation and Protection of Anticoherent Spin States
• Exact analysis of AC sensors based on Floquet time crystals
• Bayesian Frequency Metrology with Optimal Ramsey Interferometry in Optical Atomic Clocks
• Finite-temperature entanglement and coherence in asymmetric bosonic Josephson junctions
• Nonlinear-enhanced wideband sensing via subharmonic excitation of a quantum harmonic oscillator
• Lieb-Mattis states for robust entangled differential phase sensing
• Photon-resolved Floquet theory approach to spectroscopic quantum sensing
• Optimal quantum precision in noise estimation: Is entanglement necessary?
• Efficient nonclassical state preparation via generalized parity measurement
• Analytical description of collisional decoherence in a BEC double-well accelerometer
• Macroscopic Schrödinger-cat states of nonequilibrium electrons induced by cat-state optical driving and projective measurements on the light field
• Selective Preparation of Collective States in Coupled Quantum Emitters Using the SUPER Excitation Scheme
• Non-Abelian interference of topological edge states
• Quantum error correction beyond $SU(2)$: spin, bosonic, and permutation-invariant codes from convex geometry
• Optimal Superpositions for Particle Detection via Quantum Phase
• Quantum metrology through spectral measurements in quantum optics
• Reconfigurable dissipative entanglement between many spin ensembles: from robust quantum sensing to many-body state engineering
• Ultimate Precision of Direct Tomography of Wave Functions
• Quantum sensing of high-frequency gravitational waves with ion crystals
• Super-Heisenberg-limited Sensing via Collective Subradiance in Waveguide Quantum Electrodynamics
• Enhancement of the metrological sensitivity limit through knowledge of the average energy
• Cold-atom comagnetometry via optical control of spin states
• Entanglement versus cooling in the system of a driven pair of two-level qubits longitudinally coupled with a boson mode field
• Precision Bounds for Characterising Quantum Measurements
• Quantum walk on a square lattice with identical particles
• Sensing microscopic noise events by frequent quantum measurements
• Enhancement of sensitivity near exceptional points in dissipative qubit-resonator systems
• Non-Gaussian entanglement criteria for atomic homodyne detection
• Superfluid Oscillator Circuit with Quantum Current Regulator
• Laser-free method for creation of two-mode squeezed state and beam-splitter transformation with trapped ions
• Exact solutions and Dynamical phase transitions in the Lipkin-Meshkov-Glick model with Dual nonlinear interactions
• Robustness of the projected squeezed state protocol
• Power law decay of entanglement quantifiers in a single agent to a many body system coupling
• Tomography of a single-atom-resolved detector in the presence of shot-to-shot number fluctuations
• Spin minimum uncertainty states for refined uncertainty relations
• Exploring the properties of quantum scars in a toy model
• Informationally Complete Distributed Metrology Without a Shared Reference Frame
• Reference-frame-independent quantum metrology
• Characterization of Generalized Coherent States through Intensity-Field Correlations
• Violation of the Leggett-Garg inequality for dynamics of a Bose-Einstein condensate in a double-well potential
• Probing parameters estimation with Gaussian non-commutative measurements
• General quantum resources providing advantages in work-extraction tasks
• Polarimetric Light-Pulse Atom Interferometer: Two-Level Scheme
• Bounds on quantum Fisher information and uncertainty relations for thermodynamically conjugate variables
• Floquet Recurrences in the Double Kicked Top
• Phonon-induced two-axis spin squeezing with decoherence reduction in hybrid spin-optomechanical system
• Optimal and efficient inference tools for field tracking with precessing spins
• Delta-kick Squeezing
• From Bell Products to Greenberger-Horne-Zeilinger states: Quantum Memories via emergent Hamiltonians
• Exactly-solved model of light-scattering errors in quantum simulations with metastable trapped-ion qubits
• Metrological approach to the emergence of classical objectivity
• Universality in fidelity-based quantum metrology
• Bounding the benefit of adaptivity in quantum metrology using the relative fidelity
• Entanglement and U(D)-spin squeezing in symmetric multi-quDit systems and applications to quantum phase transitions in Lipkin-Meshkov-Glick D-level atom models
• Deterministic nuclear spin squeezing and squeezing by continuous measurement using vector and tensor light shifts
• Superradiant Interactions for Relic Detection with Entangled Nuclear Spins
• Proposal for spin squeezing in rare-earth ion-doped crystals with a four-color scheme
• Ultracold high-spin $\Sigma$-state polar molecules for new physics searches
• Enhanced strong interaction effect in synthetic spin-orbit coupling with mixed spin symmetry
• Entanglement dynamics in minimal Kitaev chains
• Nonequilibrium thermometry via an ensemble of initially correlated qubits
• Quantum Resource Theories of Anyonic Entanglement
• Relativistic implications of entropy and purity
• The Janus State: A Universal Lower Bound for Second-Order Coherence
• QMetro++ -- Python optimization package for large scale quantum metrology with customized strategy structures
• Multimode NOON-state generation with ultracold atoms via geodesic counterdiabatic driving
• Probing Planck scale effects on absolute mass limit in neutrino flavor evolution
• Multiparameter quantum estimation with Gaussian states: efficiently evaluating Holevo, RLD and SLD Cramér-Rao bounds
• Detecting strongly non-Gaussian entanglement
• Optimal spin- and planar-quantum squeezing in superpositions of spin coherent states
• Composite Bosons Superposition Ansatz Approach to One-Dimensional Trapped Few-Fermion Systems
• Hong-Ou-Mandel interference of more than 10 indistinguishable atoms
• Enhanced Parameter Estimation with Periodically Driven Quantum Probe
• Transfer of quantum-enhanced information through a many-body system
• Spin squeezing from bilinear spin-spin interactions: two simple theorems
• Gaussian quantum metrology in a dissipative environment
• Multiparameter quantum metrology with postselection measurements
• Tailored generation of quantum states in an entangled spinor interferometer to overcome detection noise
• Deterministic quantum correlation between coherently paired photons acting on a beam splitter
• Exact solution of the two-axis two-spin Hamiltonian
• Distributed Quantum Sensing with Squeezed-Vacuum Light in a Configurable Network of Mach-Zehnder Interferometers
• A quantum ring gyroscope based on coherence de Broglie waves
• Multipartite entanglement in quantum phase transitions
• Scaling laws for the sensitivity enhancement of non-Gaussian spin states
• Stabilizer codes for Heisenberg-limited many-body Hamiltonian estimation
• Exact quantification of bipartite entanglement in unresolvable spin ensembles
• Nuclear spin squeezing by continuous quantum non-demolition measurement: a theoretical study
• Squeezing light with optomechanical and spin-light quantum interfaces
• Protecting spin squeezing from decoherence
• Deterministic quantum correlation in an interferometric scheme
• Coherently controlled quantum features in a coupled interferometric scheme
• The role of quantum superposition in a coupled interferometric system for macroscopic quantum feature generations
• Quantum states preparation of an atomic ensemble via cavity-assisted homodyne measurement
• Long-range bipartite entanglement in XXZ spin chains with the exponential and power-law long-range interactions
• Delta-Kick Collimation of Heteronuclear Feshbach Molecules
• Generation of matter threefold star state by dynamical transfer from photonic counterpart
• Dissipative engineering a tripartite Greenberger-Horne-Zeilinger state for neutral atoms
• Mean-field spin-oscillation dynamics beyond the single-mode approximation for a harmonically trapped spin-1 Bose-Einstein condensate
• Multipartite entangled states in dipolar quantum simulators
• Quantum Phase Estimation Algorithm with Gaussian Spin States
• Instantaneous measurement can isolate the information
• Tailoring Synthetic Gauge Fields in Ultracold Atoms via Spatially Engineered Vector Beams
• Expediting quantum state transfer through the long-range extended XY model
• Chaos-Mediated Quantum State Discrimination Near Unit Fidelity
• Noisy initial-state qubit-channel metrology with additional undesirable noisy evolution
• Tweezer interferometry with NOON states
• Sub-Doppler cooling, state preparation, and optical trapping of a triel atom
• Enhanced quantum metrology by criticality-assisted noncommutative preparation
• Impact of the Unruh effect on the estimation precision of Gaussian channel parameters
• Incoherent Measurement of Sub-10 kHz Optical Linewidths
• Quantum optimal control of the Dicke manifold in dipolar Rydberg atom arrays
• State-independent uncertainty relations on multipartite spin $1/2$-systems
• Transit Noise in Spin Squeezing Experiments with Coated Rubidium Vapor Cell
• Quantum Speed Limits and the Ultimate Scaling of the Quantum Sensors
• Magnetoelastic control of quantum correlations and field sensitivity in a spin-1/2 Heisenberg dimer
• Threetangle in the XY-model class with a non-integrable field background
• Tomogram-based quantifiers of nonclassicality dynamics in Kerr and cubic media
• From Independent to Joint: Enhancing Quantum Phase and Correlation Factor Estimation by Squeezed Reservoir Engineering
• Non-Gaussianity from superselection rules
• Generating large-scale Greenberger-Horne-Zeilinger-like states in lattice spin systems
• Trade-off relation between integrated metrological gain and local dissipation in magnetic-field sensing by quantum spin ensemble