Quantum technologies with hybrid systems

Abstract

An extensively pursued current direction of research in physics aims at the development of practical technologies that exploit the effects of quantum mechanics. As part of this ongoing effort, devices for information processing, secure communication and high-precision sensing are being implemented with diverse systems, ranging from photons, atoms and spins to mesoscopic superconducting and nanomechanical structures. Their physical properties make some of these systems better suited than others for specific tasks; thus, photons are well suited for transmitting quantum information, weakly interacting spins can serve as long-lived quantum memories, and superconducting elements can rapidly process information encoded in their quantum states. A central goal of the envisaged quantum technologies is to develop devices that can simultaneously perform several of these tasks, namely, reliably store, process, and transmit quantum information. Hybrid quantum systems composed of different physical components with complementary functionalities may provide precisely such multi-tasking capabilities. This article reviews some of the driving theoretical ideas and first experimental realizations of hybrid quantum systems and the opportunities and the challenges they present and offers a glance at the near- and long-term perspectives of this fascinating and rapidly expanding field.

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• 3D Cavity quantum electrodynamics with a rare-earth spin ensemble
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• Proposal for a coherent quantum memory for propagating microwave photons
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• Quantum simulation of artificial Abelian gauge field using nitrogen-vacancy center ensembles coupled to superconducting resonators
• Electron spin resonance detected by a superconducting qubit
• Coupling spin ensembles via superconducting flux qubits
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• A superhigh-frequency optoelectromechanical system based on a slotted photonic crystal cavity
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• Entanglement and teleportation between polarization and wave-like encodings of an optical qubit
• A graphene transmon operating at 1 T
• Exceptional Point and Cross-Relaxation Effect in a Hybrid Quantum System
• Ground state cooling and high-fidelity quantum transduction via parametrically-driven bad-cavity optomechanics
• Magnon heralding in cavity optomagnonics
• Manipulating quantum materials with quantum light
• Thermodynamic work from operational principles
• Cavity Optomechanics with Polariton Bose-Einstein Condensates
• Efficient Implementation of a Quantum Algorithm in a Single Nitrogen Vacancy Center of Diamond
• Control of the Coupling Strength and the Linewidth of a Cavity-Magnon Polariton
• Tunable and Transferable Diamond Membranes for Integrated Quantum Technologies
• Microwave-optics Entanglement via Cavity Optomagnomechanics
• Low-noise amplification and frequency conversion with a multiport microwave optomechanical device
• Feedback-Induced Quantum Phase Transitions Using Weak Measurements
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• Nanoscale nonlinear effects in Erbium-implanted Yttrium Orthosilicate
• Theory of Optomechanical Locking in Driven-Dissipative Coupled Polariton Condensates
• Observation of Low Temperature Magneto-Mechanic Effects in Crystalline Resonant Phonon Cavities
• Quantum Metrology in the Ultrastrong Coupling Regime of Light-Matter Interactions: Leveraging Virtual Excitations without Extracting Them
• Robotic vectorial field alignment for spin-based quantum sensors
• Irreversibility in an optical parametric driven optomechanical system
• Kinetic inductance coupling for circuit QED with spins
• Probing the state of a mechanical oscillator with an ultra-strongly coupled quantum emitter
• Optimal collection of radiation emitted by a trapped atomic ensemble
• Rigorous ESR spectroscopy of $F{e}^{3+}$ impurity ion with oxygen vacancy in ferroelectric $SrTi{O}_3$ crystal at 20 mK
• Escaping Local Minima with Quantum Coherent Cooling
• Light-matter interactions in multi-element resonators
• Enhancing quantum exchanges between two oscillators
• Faithful quantum state transfer between weakly coupled qubits
• Principles for Optimizing Quantum Transduction in Piezo-Optomechanical Systems
• Two-photon coupling via Josephson element I: Breaking the symmetry with magnetic fields
• Transition to chaos in extended systems and their quantum impurity models
• Hybrid Rabi interaction with traveling states of light
• Transient dynamics in cavity electromagnetically induced transparency with ion Coulomb crystals
• Quantum speed limit and nonclassicality in open quantum system models using the Wigner function
• A superconducting on-chip microwave cavity for tunable hybrid systems with optically trapped Rydberg atoms
• Coherent response of inhomogeneously broadened and spatially localized emitter ensembles in waveguide QED
• Coherent quantum dynamics of systems with coupling-induced creation pathways
• Coupling of plasmons to the two-magnon continuum in antiferromagnets
• Third-order exceptional surface in a pseudo-Hermitian superconducting circuit
• Sensing microscopic noise events by frequent quantum measurements
• Room-temperature hybrid 2D-3D quantum spin system for enhanced magnetic sensing and many-body dynamics
• Dissipation and non-thermal states in cryogenic cavities
• Characterization and optimized engineering of bosonic quantum interfaces under single-mode operational constraints
• Molecular Processes as Quantum Information Resources
• Protecting information in a parametrically driven hybrid quantum system
• Accelerated Gaussian quantum state transfer between two remote mechanical resonators
• Stationary excitation waves and multimerization in arrays of quantum emitters
• Spectrally improved controllable frequency comb quantum memory
• Strong Coupling between Propagating Magnons and High-order Gyrotropic Skyrmion Modes
• Quantum Rabi interferometry of motion and radiation
• Optomechanics for quantum technologies
• Quantum Zeno dynamics induced atomic entanglement in a hybrid atom-cavity-fiber system
• Piezoelectric optomechanical approaches for efficient quantum microwave-to-optical signal transduction: the need for co-design
• Direct Generation and Detection of Correlated Photons with 3.2 um Wavelength Spacing
• Surface-induced decoherence and heating of charged particles
• Nonequilibrium thermal transport and photon squeezing in a quadratic qubit-resonator system
• Measuring High-Order Phonon Correlations in an Optomechanical Resonator
• Antibunching via cooling by heating
• Quantum heat transport in nonequilibrium anisotropic Dicke model
• Exact quantification of bipartite entanglement in unresolvable spin ensembles
• MACOR glass-ceramic based UHV cell for quantum technology applications
• Effect of Helium Ion Implantation on 3C-SiC Nanomechanical String Resonators
• Strong coupling between coherent ferrons and cavity acoustic phonons
• Topical review on acousto-optical Floquet engineering of single-photon emitters
• Quantum Shape Effects
• Passive and Deterministic Controlled-phase Gate for Single-photon Wavepackets Based on Time-reversal Symmetric Photon Transport
• Reservoir-Engineered Mechanical Cat States with a Driven Qubit
• Condensation in hybrid superconducting cavity-microscopic spins systems with finite-bandwidth drive