Theory of Metastability in Discrete-Time Open Quantum Dynamics

Metastability in open system dynamics describes the phenomena of initial relaxation to longlived metastable states before decaying to the asymptotic stable states. It has been predicted in continuous-time stochastic dynamics of both classical and quantum systems. Here we present a general theory of...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2024-01
Main Authors: Yuan-De, Jin, Chu-Dan, Qiu, Wen-Long, Ma
Format: Article
Language:English
Subjects:
Channels
Metastable state
Numerical prediction
Open systems
Sequences
System dynamics
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Metastability in open system dynamics describes the phenomena of initial relaxation to longlived metastable states before decaying to the asymptotic stable states. It has been predicted in continuous-time stochastic dynamics of both classical and quantum systems. Here we present a general theory of metastability in discrete-time open quantum dynamics, described by sequential quantum channels. We focus on a general class of quantum channels on a target system, induced by an ancilla system with a pure-dephasing coupling to the target system and under Ramsey sequences. Interesting metastable behaviors are predicted and numerically demonstrated by decomposing the average dynamics into stochastic trajectories. Examples and applications are also discussed.
ISSN:2331-8422
DOI:10.48550/arxiv.2401.00157