Initial state preparation with dynamically generated system-environment correlations

Abstract

The dependence of the dynamics of open quantum systems upon initial correlations between the system and environment is an utterly important yet poorly understood subject. For technical convenience most prior studies assume factorizable initial states where the system and its environments are uncorrelated, but these conditions are not very realistic and give rise to peculiar behaviors. One distinct feature is the rapid build up or a sudden jolt of physical quantities immediately after the system is brought in contact with its environments. The ultimate cause of this is an initial imbalance between system-environment correlations and coupling. In this note we demonstrate explicitly how to avoid these unphysical behaviors by proper adjustments of correlations and/or the coupling, for setups of both theoretical and experimental interest. We provide simple analytical results in terms of quantities that appear in linear (as opposed to affine) master equations derived for factorized initial states.

6 pages, 2 figures

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Cited by in corpus (13)

• The equilibrium states of open quantum systems in the strong coupling regime
• Non-Markovian Dynamics of Open Quantum Systems: Stochastic Equations and their Perturbative Solutions
• Quantum thermodynamics from the nonequilibrium dynamics of open systems: energy, heat capacity and the third law
• Nonequilibrium Steady State in Open Quantum Systems: Influence Action, Stochastic Equation and Power Balance
• Non-Markovian Dynamics and Entanglement of Two-level Atoms in a Common Field
• Effects of initial system-environment correlations on open quantum system dynamics and state preparation
• Non-Equilibrium Fluctuation-Dissipation Inequality and Non-Equilibrium Uncertainty Principle
• Nonequilibrium Dynamics of Charged Particles in an Electromagnetic Field: Causal and Stable Dynamics from 1/c Expansion of QED
• Decoherence Strength of Multiple Non-Markovian Environments
• Pointer-based simultaneous measurements of conjugate observables in a thermal environment
• Biexponential decay and ultralong coherence of a single qubit
• Gate-Based Initialization and Fidelity in Correlated Open Quantum Systems
• Entropic uncertainty bound for open pointer-based simultaneous measurements of conjugate observables