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Open Quantum Systems Decoherence

How to detect a possible correlation from the information of a sub-system in quantum mechanical systems

arXiv
Authors: Gen Kimura, Hiromichi Ohno, Hiroyuki Hayashi

Year

2007

Paper ID

50133

Status

Preprint

Abstract Read

~2 min

Abstract Words

101

Citations

N/A

Abstract

A possibility to detect correlations between two quantum mechanical systems only from the information of a subsystem is investigated. For generic cases, we prove that there exist correlations between two quantum systems if the time-derivative of the reduced purity is not zero. Therefore, an experimentalist can conclude non-zero correlations between his/her system and some environment if he/she finds the time-derivative of the reduced purity is not zero. A quantitative estimation of a time-derivative of the reduced purity with respect to correlations is also given. This clarifies the role of correlations in the mechanism of decoherence in open quantum systems.

Why This Paper Matters

  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
  • It adds a 2007 reference point for readers tracking recent quantum research.
  • A possibility to detect correlations between two quantum mechanical systems only from the information of a subsystem is investigated.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0705.4225 [2] arXiv https://arxiv.org/abs/0705.4225 [3] Publisher https://arxiv.org/abs/0705.4225

Local Citation Graph (Related-Paper Links)

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