High Fidelity Single-qubit Gates of a Single Neutral Atom in the Magic-Intensity Optical Dipole Trap

Abstract

We demonstrate high fidelity single-qubit gate operation in a trapped single neutral atom. The atom is trapped in the recently invented magic-intensity optical dipole trap (MI-ODT) with more stable magnetic field. The MI-ODT efficiently mitigates the detrimental effects of light shifts thus sufficiently improves the performance of single qubit-gates. The gates are driven with microwave, and the fidelity of gate operation is characterized by using the randomized benchmarking method. We obtain an average error per Clifford gate of $3.0(7)\times 10^{-5}$ which is much below the error threshold ($10^{-4}$) for fault-tolerance. This error is found to be dominated by qubit dephasing, and the corresponding coherence time relevant to the Clifford gates is also measured experimentally. This work is an essential step toward the construction of a scalable quantum computer with neutral atoms trapped in an MI-ODT array.

arXiv comment5 pages, 4 figures

References in corpus (26)

• Quantum Simulation
• Quantum information with Rydberg atoms
• Probing many-body dynamics on a 51-atom quantum simulator
• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Quantum Computing with Very Noisy Devices
• Randomized Benchmarking of Quantum Gates
• An addressable quantum dot qubit with fault-tolerant control fidelity
• An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
• Quantum Error Correction for Beginners
• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
• High-fidelity control and entanglement of Rydberg atom qubits
• A neutral atom quantum register
• Experimental fault-tolerant universal quantum gates with solid-state spins under ambient conditions
• Randomized benchmarking of single qubit gates in a 2D array of neutral atom qubits
• Single-qubit-gate error below 10^-4 in a trapped ion
• Analysis of dephasing mechanisms in a standing wave dipole trap
• Entangling two atoms of different isotopes via Rydberg blockade
• Universal gates based on targeted phase shifts in a 3D neutral atom array
• Rapid production of uniformly-filled arrays of neutral atoms
• Randomized benchmarking of atomic qubits in an optical lattice
• Experimental observation of magic-wavelength behavior in optical lattice-trapped ${}^{87}$Rb
• Coherence preservation of a single neutral atom qubit transferred between magic-intensity optical traps
• Light storage in a magnetically-dressed optical lattice
• Theory of "magic" optical traps for Zeeman-insensitive clock transitions in alkalis
• Doubly magic optical trapping for Cs atom hyperfine clock transitions

Cited by in corpus (48)

• Quantum simulation and computing with Rydberg-interacting qubits
• Rydberg mediated entanglement in a two-dimensional neutral atom qubit array
• A concise review of Rydberg atom based quantum computation and quantum simulation
• Ytterbium nuclear-spin qubits in an optical tweezer array
• A tweezer array with 6100 highly coherent atomic qubits
• Defect-free arbitrary-geometry assembly of mixed-species atom arrays
• Dispersive optical systems for scalable Raman driving of hyperfine qubits
• Non-Abelian Floquet Spin Liquids in a Digital Rydberg Simulator
• Error per single-qubit gate below $10^{-4}$ in a superconducting qubit
• Photon recoil and laser focusing limits to Rydberg gate fidelity
• Two-qubit controlled-PHASE Rydberg blockade gate protocol for neutral atoms via off-resonant modulated driving within a single pulse
• Fast, high-fidelity addressed single-qubit gates using efficient composite pulse sequences
• Randomized Benchmarking using Non-Destructive Readout in a 2D Atom Array
• Single-qubit gates with errors at the $10^{-7}$ level
• Influence of ground-Rydberg coherence in two-qubit gate based on Rydberg blockade
• Efficient preparation of 2D defect-free atom arrays with near-fewest sorting-atom moves
• CODAR: A Contextual Duration-Aware Qubit Mapping for Various NISQ Devices
• Balanced Coherence Times of Mixed-Species Atomic Qubits in a Dual $3\times 3$ Magic-Intensity Optical Dipole Trap Array
• Adiabatic and high-fidelity quantum gates with hybrid Rydberg-Rydberg interactions
• SpinQ: Compilation strategies for scalable spin-qubit architectures
• Experimental quantum channel discrimination using metastable states of a trapped ion
• Long-range-enhanced surface codes
• Extended two-body Rydberg blockade interaction with off-resonant modulated driving
• Dynamics of a spin qubit in an optical dipole trap
• Low-temperature environments for quantum computation and quantum simulation
• A fiber array architecture for atom quantum computing
• Preparing Greenberger-Horne-Zeilinger state on ground levels of neutral atoms
• Fault-tolerant compiling of classically hard IQP circuits on hypercubes
• Recapture Probability for anti-trapped Rydberg states in optical tweezers
• Magic intensity trapping of the Mg lattice clock with light shift suppressed below $10^{-19}$
• Nanoscale addressing and manipulation of neutral atoms using electromagnetically induced transparency
• Gate fidelity, dephasing, and "magic" trapping of optically trapped neutral atom
• Parametrized multiqubit gate design for neutral-atom based quantum platforms
• Entanglement generation via single-qubit rotations in a torn Hilbert space
• A quantum register using collective excitations in a Bose-Einstein condensate
• Mitigating noise of residual electric fields for single Rydberg atoms with electron photodesorption
• Probing the interaction energy of two ${}^{85}$Rb atoms in an optical tweezer via spin-motion coupling
• Supersymmetry-assisted high-fidelity ground state preparation of single neutral atom in an optical tweezer
• Universal gates for a metastable qubit in strontium-88
• Fast entangling quantum gates with almost-resonant modulated driving
• Inertial geometric quantum logic gates
• Context-Sensitive and Duration-Aware Qubit Mapping for Various NISQ Devices
• Optimized readout strategies for neutral atom quantum processors
• Relativistic hyperpolarizabilities for atomic H, Li, and Be${}^{+}$ systems
• High-fidelity multiqubit Rydberg gates via two-photon adiabatic rapid passage
• Characterization and Coherent Control of Spin Qubits with Modulated Electron Beam and Resonator
• All-to-all connectivity of Rydberg-atom-based quantum processors with messenger qubits
• O(1) benchmarking of precise rotation in a spin-squeezed Bose-Einstein condensate