Imaging the interface of a qubit and its quantum-many-body environment

Abstract

Decoherence affects all quantum systems, natural or artificial, and is the primary obstacle impeding quantum technologies. We show theoretically that for a Rydberg qubit in a Bose condensed environment, experiments can image the system-environment interface that is central for decoherence. High precision absorption images of the condensed environment will be able to capture transient signals that show the real time build up of a mesoscopic entangled state in the environment. This is possible before decoherence sources other than the condensate itself can kick in, since qubit decoherence time-scales can be tuned from the order of nanoseconds to microseconds by choice of the excited Rydberg principal quantum number ν. Imaging the interface will allow detailed explorations of open quantum system concepts and may offer guidance for coherence protection in challenging scenarios with non-Markovian environments.

11 pages, 5 figures

References in corpus (23)

• Reconstruction of non-classical cavity field states with snapshots of their decoherence
• Quantum Decoherence
• Quasiclassical calculations of BBR-induced depopulation rates and effective lifetimes of Rydberg nS, nP and nD alkali-metal atoms with n < 80
• An experimental and theoretical guide to strongly interacting Rydberg gases
• XMDS2: Fast, scalable simulation of coupled stochastic partial differential equations
• Rydberg excitation of Bose-Einstein condensates
• Non-equilibrium quantum dynamics and formation of the Bose polaron
• Ultracold atom-electron interaction: from two to many-body physics
• Process tomography of field damping and measurement of Fock state lifetimes by quantum non-demolition photon counting in a cavity
• Analytic Representations of Bath Correlation Functions for Ohmic and Superohmic Spectral Densities Using Simple Poles
• Exact open quantum system dynamics using the Hierarchy of Pure States (HOPS)
• Collective decoherence of cold atoms coupled to a Bose-Einstein condensate
• Dynamics, dephasing and clustering of impurity atoms in Bose-Einstein condensates
• Transport of strong-coupling polarons in optical lattices
• Entanglement control via reservoir engineering in ultracold atomic gases
• Reduced Density Matrix Functional Theory for Bosons
• Inelastic collision dynamics of a single cold ion immersed in a Bose-Einstein condensate
• Lifetimes of ultralong-range strontium Rydberg molecules in a dense BEC
• Particles and Fields in Superfluids: Insights from the Two-dimensional Gross-Pitaevskii Equation
• Loss rates for high-$n$, $49\lesssim n\lesssim 150$, 5sns(${}^3$S${}_1$) Rydberg atoms excited in an ${}^{84}$Sr Bose-Einstein condensate
• Tayloring Bose-Einstein condensate environments for a Rydberg impurity
• Generation and decoherence of soliton spatial superposition states
• Spectral properties of a Rydberg atom immersed in a Bose-Einstein condensate

Cited by in corpus (2)

• Simulation of absorption spectra of molecular aggregates: a Hierarchy of Stochastic Pure States approach
• In situ observation of chemistry in Rydberg molecules within a coherent solvent