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Non-Ergodicity in open quantum systems through quantum feedback

Lookup NU author(s): Dr Lewis Clark

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Abstract

© CopyrightEPLA, 2020.It is well known that quantum feedback can alter the dynamics of open quantum systems dramatically. In this paper, we show that non-Ergodicity may be induced through quantum feedback and resultantly create system dynamics that have lasting dependence on initial conditions. To demonstrate this, we consider an optical cavity inside an instantaneous quantum feedback loop, which can be implemented relatively easily in the laboratory. Non-Ergodic quantum systems are of interest for applications in quantum information processing, quantum metrology and quantum sensing and could potentially aid the design of thermal machines whose efficiency is not limited by the laws of classical thermodynamics.


Publication metadata

Author(s): Clark LA, Torzewska F, Maybee B, Beige A

Publication type: Article

Publication status: Published

Journal: Europhysics Letters

Year: 2020

Volume: 130

Issue: 5

Print publication date: 01/06/2020

Online publication date: 30/06/2020

Acceptance date: 08/06/2020

ISSN (print): 0295-5075

ISSN (electronic): 1286-4854

Publisher: IOP Publishing Ltd

URL: https://doi.org/10.1209/0295-5075/130/54002

DOI: 10.1209/0295-5075/130/54002


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