Rydberg mediated entanglement in a two-dimensional neutral atom qubit array

Abstract

We demonstrate high fidelity two-qubit Rydberg blockade and entanglement in a two-dimensional qubit array. The qubit array is defined by a grid of blue detuned lines of light with 121 sites for trapping atomic qubits. Improved experimental methods have increased the observed Bell state fidelity to $F_{\mathrm{Bell}}=0.86(2)$. Accounting for errors in state preparation and measurement (SPAM) we infer a fidelity of $F_{\mathrm{Bell}}^{-\mathrm{SPAM}}=0.88$. Accounting for errors in single qubit operations we infer that a Bell state created with the Rydberg mediated $C_Z$ gate has a fidelity of $F_{\mathrm{Bell}}^{C_Z}=0.89$. Comparison with a detailed error model based on quantum process matrices indicates that finite atom temperature and laser noise are the dominant error sources contributing to the observed gate infidelity.

includes supplemental material, error analysis revised to use process matrices

References in corpus (37)

• Quantum Computing
• Quantum information with Rydberg atoms
• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Fast quantum gates for neutral atoms
• An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
• High-fidelity two-qubit quantum logic gates using trapped calcium-43 ions
• High-fidelity quantum logic gates using trapped-ion hyperfine qubits
• Entanglement of two individual neutral atoms using Rydberg blockade
• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• Parallel implementation of high-fidelity multi-qubit gates with neutral atoms
• Synthetic three-dimensional atomic structures assembled atom by atom
• High-Fidelity Universal Gate Set for ${}^9$Be${}^{+}$ Ion Qubits
• Benchmarking an 11-qubit quantum computer
• High-fidelity control and entanglement of Rydberg atom qubits
• Quasiclassical calculations of BBR-induced depopulation rates and effective lifetimes of Rydberg nS, nP and nD alkali-metal atoms with n < 80
• Entangling Atomic Spins with a Strong Rydberg-Dressed Interaction
• Analysis of a quantum logic device based on dipole-dipole interactions of optically trapped Rydberg atoms
• Randomized benchmarking of single qubit gates in a 2D array of neutral atom qubits
• A Rydberg blockade CNOT gate and entanglement in a 2D array of neutral atom qubits
• Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states
• Analysis of dephasing mechanisms in a standing wave dipole trap
• Deterministic entanglement of two neutral atoms via Rydberg blockade
• Defect-free assembly of 2D clusters of more than 100 single-atom quantum systems
• Entangling two atoms of different isotopes via Rydberg blockade
• An omniscient Maxwell's demon
• Universal gates based on targeted phase shifts in a 3D neutral atom array
• Magic-wavelength optical traps for Rydberg atoms
• High-fidelity Rydberg-blockade entangling gate using shaped, analytic pulses
• Fidelity of a Rydberg blockade quantum gate from simulated quantum process tomography
• A two-dimensional lattice of blue detuned atom traps using a projected Gaussian beam array
• AC Stark shift of the Cs microwave atomic clock transitions
• Parallel low-loss measurement of multiple atomic qubits
• Quantum gates in mesoscopic atomic ensembles based on adiabatic passage and Rydberg blockade
• High Fidelity Single-qubit Gates of a Single Neutral Atom in the Magic-Intensity Optical Dipole Trap
• Comparison of Gaussian and super Gaussian laser beams for addressing atomic qubits
• Rydberg state mediated quantum gates and entanglement of pairs of neutral atoms
• Doubly magic optical trapping for Cs atom hyperfine clock transitions

Cited by in corpus (170)

• Quantum Phases of Matter on a 256-Atom Programmable Quantum Simulator
• Parallel implementation of high-fidelity multi-qubit gates with neutral atoms
• Demonstration of multi-qubit entanglement and algorithms on a programmable neutral atom quantum computer
• High-Fidelity Entanglement and Detection of Alkaline-Earth Rydberg Atoms
• Quantum simulation and computing with Rydberg-interacting qubits
• Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays
• A concise review of Rydberg atom based quantum computation and quantum simulation
• Assessment of Rydberg Atoms for Wideband Electric Field Sensing
• CutQC: Using Small Quantum Computers for Large Quantum Circuit Evaluations
• Ytterbium nuclear-spin qubits in an optical tweezer array
• Noisy intermediate-scale quantum computers
• Universal gate operations on nuclear spin qubits in an optical tweezer array of ${}^{171}$Yb atoms
• Long-lived Bell states in an array of optical clock qubits
• Trapped arrays of alkaline earth Rydberg atoms in optical tweezers
• A dual-element, two-dimensional atom array with continuous-mode operation
• Neutral Atom Quantum Computing Hardware: Performance and End-User Perspective
• Quantum networks with neutral atom processing nodes
• Ultrafast energy exchange between two single Rydberg atoms on the nanosecond timescale
• Fast multi-qubit gates by adiabatic evolution in interacting excited state manifolds
• Symmetric Rydberg controlled-Z gates with adiabatic pulses
• Enhanced atom-by-atom assembly of arbitrary tweezers arrays
• Tweezer-programmable 2D quantum walks in a Hubbard-regime lattice
• Sub-microsecond entangling gate between trapped ions via Rydberg interaction
• Quantum Computing with Circular Rydberg Atoms
• Fermionic quantum processing with programmable neutral atom arrays
• High fidelity entanglement of neutral atoms via a Rydberg-mediated single-modulated-pulse controlled-PHASE gate
• Quantum Error Correction with Metastable States of Trapped Ions Using Erasure Conversion
• Scalable quantum computing with qudits on a graph
• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Robust Mølmer-Sørensen gate for neutral atoms using rapid adiabatic Rydberg dressing
• Defect-free arbitrary-geometry assembly of mixed-species atom arrays
• Benchmarking and fidelity response theory of high-fidelity Rydberg entangling gates
• Preparation of hundreds of microscopic atomic ensembles in optical tweezer arrays
• Unitary and non-unitary quantum cellular automata with Rydberg arrays
• Spin Squeezing by Rydberg Dressing in an Array of Atomic Ensembles
• Fast Preparation and Detection of a Rydberg Qubit using Atomic Ensembles
• Many-body quantum teleportation via operator spreading in the traversable wormhole protocol
• Laser Trapping of Circular Rydberg Atoms
• Demonstration of a Quantum Gate using Electromagnetically Induced Transparency
• Asymmetric blockade and multi-qubit gates via dipole-dipole interactions
• Optimized Geometric Quantum Computation with mesoscopic ensemble of Rydberg Atoms
• Nonadiabatic noncyclic geometric quantum computation in Rydberg atoms
• A two-dimensional programmable tweezer array of fermions
• Controlling Rydberg excitations using ion core transitions in alkaline earth atom tweezer arrays
• Many-body scar state intrinsic to periodically driven system: Rigorous results
• Optimizing Rydberg Gates for Logical Qubit Performance
• Resilient quantum gates on periodically driven Rydberg atoms
• Photon recoil and laser focusing limits to Rydberg gate fidelity
• Classically-Verifiable Quantum Advantage from a Computational Bell Test
• Optimal and Variational Multi-Parameter Quantum Metrology and Vector Field Sensing
• Analyzing the Rydberg-based omg architecture for ${}^{171}$Yb nuclear spins
• Sensitivity of quantum gate fidelity to laser phase and intensity noise
• Parallel assembly of arbitrary defect-free atom arrays with a multi-tweezer algorithm
• Quantum optimization via four-body Rydberg gates
• Multiplexed telecom-band quantum networking with atom arrays in optical cavities
• A simple, passive design for large optical trap arrays for single atoms
• Two-qubit controlled-PHASE Rydberg blockade gate protocol for neutral atoms via off-resonant modulated driving within a single pulse
• Enriching the quantum toolbox of ultracold molecules with Rydberg atoms
• Suppress motional dephasing of ground-Rydberg transition for high-fidelity quantum control with neutral atoms
• Doppler-resilient ground-Rydberg transition and its application in high-fidelity entangling gates with neutral atoms
• Application of adiabatic passage in Rydberg atomic ensembles for quantum information processing
• Bayesian optimal control of GHZ states in Rydberg lattices
• Long-lived circular Rydberg states of laser-cooled Rubidium atoms in a cryostat
• Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar molecule
• Protocols for Rydberg entangling gates featuring robustness against quasi-static errors
• The Robustness of a Collectively Encoded Rydberg Qubit
• Preparation of a Heteronuclear Two-atom System in the 3D Motional Ground State in an Optical Tweezer
• Randomized Benchmarking using Non-Destructive Readout in a 2D Atom Array
• Computational Capabilities and Compiler Development for Neutral Atom Quantum Processors: Connecting Tool Developers and Hardware Experts
• Single temporal-pulse-modulated parameterized controlled-phase gate for Rydberg atoms
• Raman Sideband Cooling in Optical Tweezer Arrays for Rydberg Dressing
• High-fidelity interconversion between Greenberger-Horne-Zeilinger and $W$ states through Floquet-Lindblad engineering in Rydberg atom arrays
• Active cancellation of servo-induced noise on stabilized lasers via feedforward
• Black-body radiation induced facilitated excitation of Rydberg atoms in optical tweezers
• Influence of ground-Rydberg coherence in two-qubit gate based on Rydberg blockade
• Reduction of laser intensity noise over 1 MHz band for single atom trapping
• Efficient preparation of 2D defect-free atom arrays with near-fewest sorting-atom moves
• Dipole-dipole interaction driven antiblockade of two Rydberg atoms
• High-rate quantum LDPC codes for long-range-connected neutral atom registers
• Single atom movement with dynamic holographic optical tweezers
• Rabi-error and Blockade-error-resilient All-Geometric Rydberg Quantum Gates
• Array of Individual Circular Rydberg Atoms Trapped in Optical Tweezers
• Dicke-state preparation through global transverse control of Ising-coupled qubits
• D1 magic wavelength tweezers for scaling atom arrays
• Unselective ground-state blockade of Rydberg atoms for implementing quantum gates
• Demonstration of weighted graph optimization on a Rydberg atom array using local light-shifts
• Electromagnetically induced transparency with Cu${}_2$O excitons in the presence of phonon coupling
• Speed, retention loss, and motional heating of atoms in an optical conveyor belt
• Sub-ms, nondestructive, time-resolved quantum-state readout of a single, trapped neutral atom
• Experimental Bayesian calibration of trapped ion entangling operations
• Neutral atom entanglement using adiabatic Rydberg dressing
• A tweezer clock with half-minute atomic coherence at optical frequencies and high relative stability
• Continuous protection of a collective state from inhomogeneous dephasing
• Counting of Hong-Ou-Mandel Bunched Optical Photons Using a Fast Pixel Camera
• Nonlinear Rydberg exciton-polaritons in Cu${}_2$O microcavities
• A Coherent Light Shift on Alkaline-Earth Rydberg Atoms from Isolated Core Excitation without Auto-Ionization
• Discrete-Time Quantum-Walk & Floquet Topological Insulators via Distance-Selective Rydberg-Interaction
• Balanced Coherence Times of Mixed-Species Atomic Qubits in a Dual $3\times 3$ Magic-Intensity Optical Dipole Trap Array
• Assembled arrays of Rydberg-interacting atoms
• Bichromatic Imaging of Single Molecules in an Optical Tweezer Array
• Transition Slow-Down by Rydberg Interaction of Neutral Atoms and a Fast Controlled-NOT Quantum Gate
• Solving optimization problems with local light shift encoding on Rydberg quantum annealers
• Anomalous diffusion and localization in a positionally disordered quantum spin array
• Preparation of ${}^{87}$Rb and ${}^{133}$Cs in the motional ground state of a single optical tweezer
• Interconversion of $W$ and Greenberger-Horne-Zeilinger states for Ising-coupled qubits with transverse global control
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms
• An architecture for two-qubit encoding in neutral ytterbium-171 atoms
• Indium tin oxide films meet circular Rydberg atoms: prospects for novel quantum simulation schemes
• Hyperentanglement of divalent neutral atoms by Rydberg blockade
• All optical quantum information processing via a single step Rydberg blockade gate
• Multi-scale architecture for fast optical addressing and control of large scale qubit arrays
• Geometric quantum gates via dark paths in Rydberg atoms
• Single-site Rydberg addressing in 3D atomic arrays for quantum computing with neutral atoms
• Extended two-body Rydberg blockade interaction with off-resonant modulated driving
• Off-resonant modulated driving gate protocols for two-photon ground-Rydberg transition and finite Rydberg blockade strength
• Enhanced quantum state transfer via feedforward cancellation of optical phase noise
• Characterization of Suspended Membrane Waveguides towards a Photonic Atom Trap Integrated Platform
• Interspecies Förster resonances of Rb-Cs Rydberg $d$-states for enhanced multi-qubit gate fidelities
• Quantum gates with weak van der Waals interactions of neutral Rydberg atoms
• Shortcut-to-Adiabatic Controlled-Phase Gate in Rydberg Atoms
• Parallel implementation of CNOT${}^N$ and C${}_2$NOT${}^2$ gates via homonuclear and heteronuclear Förster interactions of Rydberg atoms
• Fast entangling gates for Rydberg atoms via resonant dipole-dipole interaction
• High-numerical-aperture and long-working-distance objectives for single-atom experiments
• Dynamics of a spin qubit in an optical dipole trap
• A high optical access cryogenic system for Rydberg atom arrays with a 3000-second trap lifetime
• Toffoli gate based on a three-body fine-structure-state-changing Förster resonance in Rydberg atoms
• Characterization of Errors in Interferometry with Entangled Atoms
• Two-qubit gate in neutral atoms using transitionless quantum driving
• Ab-initio tree-tensor-network digital twin for quantum computer benchmarking in 2D
• Ultra precise determination of Cs($n{S}_{1/2}$) and Cs($n{D}_J$) quantum defects for sensing and computing: Evaluation of core contributions
• High-fidelity and robust controlled-Z gates implemented with Rydberg atoms via echoing rapid adiabatic passage
• Variational simulation of the Lipkin-Meshkov-Glick model on a neutral atom quantum computer
• Generating Target Graph Couplings for QAOA from Native Quantum Hardware Couplings
• Preparing Greenberger-Horne-Zeilinger state on ground levels of neutral atoms
• Two-qubit atomic gates: Spatio-temporal control of Rydberg interaction
• Stabilization of Discrete Time-Crystaline Response on a Superconducting Quantum Computer by increasing the Interaction Range
• Measurement and feed-forward correction of the fast phase noise of lasers
• Long-range $CC\Phi$ gates via radio-frequency-induced Förster resonances
• Quantum gates between distant atoms mediated by a Rydberg excitation antiferromagnet
• The iSWAP gate with polar molecules: Robustness criteria for entangling operations
• Efficient generation of multiqubit entanglement states using rapid adiabatic passage
• Ion-mediated interaction and controlled phase gate operation between two atomic qubits
• Plane-selective manipulations of nuclear spin qubits in a three-dimensional optical tweezer array
• Threading an atom with light
• Robust phase-controlled gates for scalable atomic quantum processors using optical standing waves
• Fast nuclear-spin gates and electrons-nuclei entanglement of neutral atoms in weak magnetic fields
• Comparing planar quantum computing platforms at the quantum speed limit
• Fast atom-photon entangling gates with a superconducting coplanar waveguide
• Rydberg wire gates for universal quantum computation
• Fast nuclear-spin entangling gates compatible with large-scale atomic arrays
• Ultratight confinement of atoms in a Rydberg empowered optical lattice
• Supersymmetry-assisted high-fidelity ground state preparation of single neutral atom in an optical tweezer
• Barium-based Rydberg atom quantum technologies with long Rydberg coherence
• Kicked-Ising Quantum Battery
• Time-Optimal Two- and Three-Qubit Gates for Rydberg Atoms
• Fast entangling quantum gates with almost-resonant modulated driving
• Rydberg-atom manipulation through strong interaction with free electrons
• Freedom of mixer rotation-axis improves performance in the quantum approximate optimization algorithm
• Dipole blockade without dipole-dipole interaction
• High-fidelity multiqubit Rydberg gates via two-photon adiabatic rapid passage
• Resource-efficient shadow tomography using equatorial stabilizer measurements
• Quantum science with arrays of metastable helium-3 atoms
• Electron cloud design for Rydberg multi-qubit gates
• Coherence enhancement of Rydberg polaritons
• Three-qubit encoding in ytterbium-171 atoms for simulating 1+1D QCD
• Asymmetric Rydberg blockade of giant excitons in Cuprous Oxide
• Quantum error correction in a time-dependent transverse field Ising model
• Suppressing crosstalk for Rydberg quantum gates
• Engineering the non-Hermitian Su-Schrieffer-Heeger model with skin effects in Rydberg atom arrays
• Pontryagin Maximum Principle for Rydberg-blockaded state-to-state transfers: A semi-analytic approach