High-fidelity Rydberg-blockade entangling gate using shaped, analytic pulses

Abstract

We show that the use of shaped pulses improves the fidelity of a Rydberg blockade two-qubit entangling gate by several orders of magnitude compared to previous protocols based on square pulses or optimal control pulses. Using analytical Derivative Removal by Adiabatic Gate (DRAG) pulses that reduce excitation of primary leakage states and an analytical method of finding the optimal Rydberg blockade we generate Bell states with a fidelity of $F>0.9999$ in a 300 K environment for a gate time of only $50\mathrm{ns}$, which is an order of magnitude faster than previous protocols. These results establish the potential of neutral atom qubits with Rydberg blockade gates for scalable quantum computation.

6 pages, 5 figures

References in corpus (3)

• Simple pulses for elimination of leakage in weakly nonlinear qubits
• Quasiclassical calculations of BBR-induced depopulation rates and effective lifetimes of Rydberg nS, nP and nD alkali-metal atoms with n < 80
• Analytic control methods for high fidelity unitary operations in a weakly nonlinear oscillator

Cited by in corpus (61)

• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• High-fidelity parallel entangling gates on a neutral atom quantum computer
• High-fidelity control and entanglement of Rydberg atom qubits
• Rydberg atom quantum technologies
• 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
• Entangling two atoms of different isotopes via Rydberg blockade
• High-fidelity Rydberg quantum gate via a two-atom dark state
• Efficient Arbitrary Simultaneously Entangling Gates on a trapped-ion quantum computer
• Symmetric Rydberg controlled-Z gates with adiabatic pulses
• High fidelity entanglement of neutral atoms via a Rydberg-mediated single-modulated-pulse controlled-PHASE gate
• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Counteracting systems of diabaticities using DRAG controls: The status after 10 years
• Two-qubit gates using adiabatic passage of the Stark-tuned Förster resonances in Rydberg atoms
• Optimized Geometric Quantum Computation with mesoscopic ensemble of Rydberg Atoms
• Rydberg Quantum Gates Free from Blockade Error
• Optimizing Rydberg Gates for Logical Qubit Performance
• Photon recoil and laser focusing limits to Rydberg gate fidelity
• Robust Rydberg gate via Landau-Zener control of Förster resonance
• Robust control and optimal Rydberg states for neutral atom two-qubit gates
• Fast, Accurate, and Realizable Two-Qubit Entangling Gates by Quantum Interference in Detuned Rabi Cycles of Rydberg Atoms
• Two-qubit controlled-PHASE Rydberg blockade gate protocol for neutral atoms via off-resonant modulated driving within a single pulse
• Doppler-resilient ground-Rydberg transition and its application in high-fidelity entangling gates with neutral atoms
• Suppress motional dephasing of ground-Rydberg transition for high-fidelity quantum control with neutral atoms
• Systematic Magnus-based approach for suppressing leakage and non-adiabatic errors in quantum dynamics
• Single temporal-pulse-modulated parameterized controlled-phase gate for Rydberg atoms
• Accurate Quantum Logic Gates by Spin Echo in Rydberg Atoms
• Influence of ground-Rydberg coherence in two-qubit gate based on Rydberg blockade
• Scalable $W$-type entanglement resource in neutral-atom arrays with Rydberg-dressed resonant dipole-dipole interaction
• Conversion from $W$ to Greenberger-Horne-Zeilinger states in the Rydberg-blockade regime of neutral-atom systems: Dynamical-symmetry-based approach
• Rabi-error and Blockade-error-resilient All-Geometric Rydberg Quantum Gates
• Deterministic Fast Scrambling with Neutral Atom Arrays
• Supervised learning for robust quantum control in composite-pulse systems
• Dynamical generation of chiral $W$ and Greenberger-Horne-Zeilinger states in laser-controlled Rydberg-atom trimers
• Adiabatic and high-fidelity quantum gates with hybrid Rydberg-Rydberg interactions
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms
• Hyperentanglement of divalent neutral atoms by Rydberg blockade
• High-fidelity Rydberg controlled-Z gates with optimal pulses
• Single-site Rydberg addressing in 3D atomic arrays for quantum computing with neutral atoms
• Two-qubit entangling gates between distant atomic qubits in a lattice
• Nonadiabatic corrections to fast dispersive multiqubit gates involving Z control
• Fast entangling gates for Rydberg atoms via resonant dipole-dipole interaction
• Universal Barenco quantum gates via a tunable non-collinear interaction
• Two-qubit atomic gates: Spatio-temporal control of Rydberg interaction
• The iSWAP gate with polar molecules: Robustness criteria for entangling operations
• Onset of scrambling as a dynamical transition in tunable-range quantum circuits
• Leakage suppression by ultrafast pulse shaping
• Minimal Time Robust Control for Two Superconducting Qubits
• Nanoscale addressing and manipulation of neutral atoms using electromagnetically induced transparency
• Error-budgeting for a controlled-phase gate with strontium-88 Rydberg atoms
• Parametrized multiqubit gate design for neutral-atom based quantum platforms
• Suppressing spurious transitions using spectrally balanced pulse
• Comparison of Two Optimization Methods for a Rydberg Quantum Gate
• Time-Optimal Two- and Three-Qubit Gates for Rydberg Atoms
• Quantum Hamiltonian Algorithms for Maximum Independent Sets
• High-fidelity multiqubit Rydberg gates via two-photon adiabatic rapid passage
• All-to-all connectivity of Rydberg-atom-based quantum processors with messenger qubits
• The Virtual Quantum Device (VQD): A tool for detailed emulation of quantum computers
• Distinct many-body scars and emergent quantum phases driven by competing interactions in two-species Rydberg arrays
• High-Order Hermite Optimization: Fast and Exact Gradient Computation in Open-Loop Quantum Optimal Control using a Discrete Adjoint Approach