Robust quantum logic in neutral atoms via adiabatic Rydberg dressing

Abstract

We study a scheme for implementing a controlled-Z (CZ) gate between two neutral-atom qubits based on the Rydberg blockade mechanism in a manner that is robust to errors caused by atomic motion. By employing adiabatic dressing of the ground electronic state, we can protect the gate from decoherence due to random phase errors that typically arise because of atomic thermal motion. In addition, the adiabatic protocol allows for a Doppler-free configuration that involves counterpropagating lasers in a ${\sigma }_{+}/{\sigma }_{-}$ orthogonal polarization geometry that further reduces motional errors due to Doppler shifts. The residual motional error is dominated by dipole-dipole forces acting on doubly-excited Rydberg atoms when the blockade is imperfect. For reasonable parameters, with qubits encoded into the clock states of ${}^{133}$Cs, we predict that our protocol could produce a CZ gate in $<10$ $\mu$s with error probability on the order of $10^{-3}$.

arXiv comment9 pages, 5 figures

References in corpus (21)

• Quantum information with Rydberg atoms
• A Quantum Adiabatic Evolution Algorithm Applied to Random Instances of an NP-Complete Problem
• Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
• Fast quantum gates for neutral atoms
• Demonstration of a neutral atom controlled-NOT quantum gate
• Entanglement of two individual neutral atoms using Rydberg blockade
• Evidence for coherent collective Rydberg excitation in the strong blockade regime
• Strongly correlated gases of Rydberg-dressed atoms: quantum and classical dynamics
• Quantum gates and multi-particle entanglement by Rydberg excitation blockade and adiabatic passage
• Fast adiabatic qubit gates using only ${\sigma }_z$ control
• Deterministic entanglement of two neutral atoms via Rydberg blockade
• Interactions Between Rydberg-Dressed Atoms
• Rydberg dressing: Understanding of collective many-body effects and implications for experiments
• Two-Atom Rydberg Blockade using Direct 6S to nP Excitation
• Rydberg-dressing of atoms in optical lattices
• Towards an experimentally feasible controlled-phase gate on two blockaded Rydberg atoms
• Adiabatic quantum computation with Rydberg-dressed atoms
• Non-adiabatic motional effects and dissipative blockade for Rydberg atoms excited from optical lattices or microtraps
• Rydberg state mediated quantum gates and entanglement of pairs of neutral atoms
• Universal Quantum Computation in a Neutral Atom Decoherence Free Subspace
• Intensity landscape and the possibility of magic trapping of alkali Rydberg atoms in infrared optical lattices

Cited by in corpus (51)

• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• Entangling Atomic Spins with a Strong Rydberg-Dressed Interaction
• Quantum simulation and computing with Rydberg-interacting qubits
• Experimental investigations of the dipolar interactions between single Rydberg atoms
• Universal gates based on targeted phase shifts in a 3D neutral atom array
• Transverse-Field Ising Dynamics in a Rydberg-Dressed Atomic Gas
• Rydberg-atom-based scheme of nonadiabatic geometric quantum computation
• A robust entangling gate for polar molecules using magnetic and microwave fields
• 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
• Robust Mølmer-Sørensen gate for neutral atoms using rapid adiabatic Rydberg dressing
• Resonant Rydberg Dressing of Alkaline-Earth Atoms via Electromagnetically Induced Transparency
• Optimized Geometric Quantum Computation with mesoscopic ensemble of Rydberg Atoms
• Resilient quantum gates on periodically driven Rydberg atoms
• Spatially tunable spin interactions in neutral atom arrays
• Realization of a Rydberg-dressed Ramsey interferometer and electrometer
• Photon recoil and laser focusing limits to Rydberg gate fidelity
• Robust Rydberg gate via Landau-Zener control of Förster resonance
• Observation of a large, resonant, cross-Kerr nonlinearity in a free-space Rydberg medium
• Demonstration of the Jaynes-Cummings ladder with Rydberg-dressed atoms
• Two-qubit controlled-PHASE Rydberg blockade gate protocol for neutral atoms via off-resonant modulated driving within a single pulse
• Rydberg-interaction gates via adiabatic passage and phase control of driving fields
• Discrete time crystal in a finite chain of Rydberg atoms without disorder
• 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
• Qudit entanglers using quantum optimal control
• Annulled van der Waals interaction and fast Rydberg quantum gates
• Dipole-dipole interaction driven antiblockade of two Rydberg atoms
• A tunable CW UV laser with <35 kHz absolute frequency instability for precision spectroscopy of Sr Rydberg states
• One-step implementation of Toffoli gate for neutral atoms based on unconventional Rydberg pumping
• Neutral atom entanglement using adiabatic Rydberg dressing
• Circuit-based leakage-to-erasure conversion in a neutral atom quantum processor
• Implementing a neutral-atom controlled-phase gate with a single Rydberg pulse
• Density matrix reconstruction of three-level atoms via Rydberg electromagnetically induced transparency
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms
• Entangling quantum logic gates in neutral atoms via the microwave-driven spin-flip blockade
• Rydberg Noisy-Dressing and applications in making soliton-molecules and droplet quasi-crystals
• Ab initio calculation of Hubbard parameters for Rydberg-dressed atoms in an one-dimensional optical lattice
• Switchable dynamic Rydberg-dressed excitation via a cascaded double electromagnetically induced transparency
• Motional decoherence in ultracold Rydberg atom quantum simulators of spin models
• Thermal-dephasing-tolerant generation of Schrödinger cat states with Rydberg dressed blockade
• High-fidelity and robust controlled-Z gates implemented with Rydberg atoms via echoing rapid adiabatic passage
• Heralded W state preparation using laser-designed super-atoms
• Experimental Demonstration of Stationary Dark-State Polaritons Dressed by Dipole-Dipole Interaction
• Resonant stroboscopic Rydberg dressing: electron-motion coupling and multi-body interactions
• Mantra: Rewriting Quantum Programs to Minimize Trap-Movements for Zoned Rydberg Atom Arrays
• Zeno-effect Computation: Opportunities and Challenges
• Decoherence in excited atoms by low-energy scattering
• Multi-Qubit Parity Gates for Rydberg Atoms in Various Configurations
• Fast spin squeezing by distance-selective long-range interactions with Rydberg molecule dressing
• Probing spin-motion coupling of two Rydberg atoms by a Stern-Gerlach-like experiment