A1 Refereed original research article in a scientific journal
Measuring non-Markovianity of processes with controllable system-environment interaction
Authors: Tang JS, Li CF, Li YL, Zou XB, Guo GC, Breuer HP, Laine EM, Piilo J
Publisher: EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
Publication year: 2012
Journal: EPL
Journal name in source: EPL
Journal acronym: EPL-EUROPHYS LETT
Article number: ARTN 10002
Number in series: 1
Volume: 97
Issue: 1
Number of pages: 5
ISSN: 0295-5075
DOI: https://doi.org/10.1209/0295-5075/97/10002
Self-archived copy’s web address: https://arxiv.org/abs/1109.2438
Abstract
Non-Markovian processes have recently become a central topic in the study of open quantum systems. We realize experimentally non-Markovian decoherence processes of single photons by combining time delay and evolution in a polarization-maintaining optical fiber. The experiment allows the identification of the process with strongest memory effects as well as the determination of a recently proposed measure for the degree of quantum non-Markovianity based on the exchange of information between the open system and its environment. Our results show that an experimental quantification of memory in quantum processes is indeed feasible which could be useful in the development of quantum memory and communication devices. Copyright (C) EPLA, 2012
Non-Markovian processes have recently become a central topic in the study of open quantum systems. We realize experimentally non-Markovian decoherence processes of single photons by combining time delay and evolution in a polarization-maintaining optical fiber. The experiment allows the identification of the process with strongest memory effects as well as the determination of a recently proposed measure for the degree of quantum non-Markovianity based on the exchange of information between the open system and its environment. Our results show that an experimental quantification of memory in quantum processes is indeed feasible which could be useful in the development of quantum memory and communication devices. Copyright (C) EPLA, 2012
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