Quantifying Non-Markovianity with Temporal Steering
書誌事項
- 公開日
- 2016-01-15
- 資源種別
- journal article
- 権利情報
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- http://link.aps.org/licenses/aps-default-license
- http://link.aps.org/licenses/aps-default-accepted-manuscript-license
- DOI
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- 10.1103/physrevlett.116.020503
- 10.48550/arxiv.1503.00836
- 公開者
- American Physical Society (APS)
この論文をさがす
説明
Einstein-Podolsky-Rosen (EPR) steering is a type of quantum correlation which allows one to remotely prepare, or steer, the state of a distant quantum system. While EPR steering can be thought of as a purely spatial correlation there does exist a temporal analogue, in the form of single-system temporal steering. However, a precise quantification of such temporal steering has been lacking. Here we show that it can be measured, via semidefinite programming, with a temporal steerable weight, in direct analogy to the recently proposed EPR steerable weight. We find a useful property of the temporal steerable weight in that it is a non-increasing function under completely-positive trace-preserving maps and can be used to define a sufficient and practical measure of strong non-Markovianity.
4 pages, 2 figures, plus supplementary information. Updated title to match the published version
収録刊行物
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- Physical Review Letters
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Physical Review Letters 116 (2), 020503-, 2016-01-15
American Physical Society (APS)