Experimentally witnessing the initial correlation between an open quantum system and its environment
Abstract
System-environment correlations, which determine the (non-)Markovian character of a dynamical process, is an area of intense interest in the study of open quantum systems. We send photons emitted from a quantum dot sample into a $15$-m polarization-maintaining optical fiber to generate different system-environment correlated states and then witness the correlations by observing the growth of trace distances. This experimental scheme of correlation witnessing based on system-environment information flow can also be used for other similar systems.
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The relative entropy represents a possibility for an alternative distance measure that is natural both from an information-theoretic perspective and from the point of view of nonequilibrium thermodynamics, since the negative rate of change of the entropy relative to an invariant thermal equilibrium state can be interpreted as entropy production.
“In particular, the relative entropy represents a possibility which is natural both from an information theoretic perspective and from the point of view of nonequilibrium thermodynamics, since the negative rate of change of the entropy relative to an invariant thermal equilibrium state can be interpreted as entropy production [53, 54].”
From Foundations and measures of quantum non-Markovianity (2012) · cites this paper as [53]
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- Authors
- Li, C.-F., Tang, J.-S., Li, Y.-L., & Guo, G.-C.
- Affiliations
- University of Science and Technology of China (CN)
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2011-06-24
- Volume
- 83
- Issue
- 6
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2082533325
- Cited by
- 66
- References
- 24
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 5 · 2023: 2 · 2022: 3 · 2021: 3 · 2020: 3 · 2019: 3 · 2018: 8 · 2017: 6 · 2016: 3 · 2015: 6 · 2014: 2 · 2013: 9 · 2012: 7
- FWCI
- 3.65
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review A (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Advanced Thermodynamics and Statistical Mechanics
- Keywords
- system-environment correlations, open quantum systems, non-Markovian dynamics, trace distance, quantum dots, polarization-maintaining fiber, information flow
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