Motional decoherence in ultracold Rydberg atom quantum simulators of spin models
arXiv:2201.08463 · doi:10.1103/PhysRevA.110.053321
Abstract
Ultracold Rydberg atom arrays are an emerging platform for quantum simulation and computing. However, decoherence in these systems remains incompletely understood. Recent experiments [Guardado-Sanchez et al. Phys. Rev. X 8, 021069 (2018)] observed strong decoherence in the quench and longitudinal-field-sweep dynamics of two-dimensional Ising models realized with Lithium-6 Rydberg atoms in optical lattices. This decoherence was conjectured to arise from spin-motion coupling. Here we show that spin-motion coupling indeed leads to decoherence in qualitative, and often quantitative, agreement with the experimental data, treating the difficult spin-motion coupled problem using the discrete truncated Wigner approximation method. We also show that this decoherence will be an important factor to account for in future experiments with Rydberg atoms in optical lattices and microtrap arrays, and discuss methods to mitigate the effect of motion, such as using heavier atoms or deeper traps.
References in corpus (19)
- Probing many-body dynamics on a 51-atom quantum simulator
- Many-Body Physics with Individually-Controlled Rydberg Atoms
- Quantum Phases of Matter on a 256-Atom Programmable Quantum Simulator
- Probing Topological Spin Liquids on a Programmable Quantum Simulator
- Programmable quantum simulation of 2D antiferromagnets with hundreds of Rydberg atoms
- Many-Body Quantum Spin Dynamics with Monte Carlo Trajectories on a Discrete Phase Space
- Localization phenomena in interacting Rydberg lattice gases with position disorder
- Quench Dynamics of a Fermi Gas with Strong Non-Local Interactions
- Robust quantum logic in neutral atoms via adiabatic Rydberg dressing
- Dynamics of correlations in two-dimensional quantum spin models with long-range interactions: A phase-space Monte-Carlo study
- Photon recoil and laser focusing limits to Rydberg gate fidelity
- Spontaneous avalanche dephasing in large Rydberg ensembles
- Hybrid discrete-continuous truncated Wigner approximation for driven, dissipative spin systems
- Driven-dissipative criticality within the discrete truncated Wigner approximation
- Creation and transfer of non-classical states of motion using Rydberg dressing of atoms in a lattice
- Black-body radiation induced facilitated excitation of Rydberg atoms in optical tweezers
- Ultrafast Many-Body Dynamics in an Ultracold Rydberg-Excited Atomic Mott Insulator
- Performance evaluation of the discrete truncated Wigner approximation for quench dynamics of quantum spin systems with long-range interactions
- Recapture Probability for anti-trapped Rydberg states in optical tweezers
Cited by in corpus (5)
- Resonant stroboscopic Rydberg dressing: electron-motion coupling and multi-body interactions
- Emergent disorder and sub-ballistic dynamics in quantum simulations of the Ising model using Rydberg atom arrays
- Probing spin-motion coupling of two Rydberg atoms by a Stern-Gerlach-like experiment
- Generation of Motional Squeezed States for Neutral Atoms in Optical Tweezers
- Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols