Quantum erasure in the presence of a thermal bath: The effects of system–environment microscopic correlations

•A setup aiming at the observation of quantum erasure is proposed in the cavity quantum electrodynamics domain.•The action of the environment on the field modes that store the which-way information is computed.•The effectiveness of the process of erasure depends on the class of states chosen to perf...

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Bibliographic Details
Published in:Physics letters. A 2015-09, Vol.379 (34-35), p.1864-1867
Main Authors: Bosco de Magalhães, A.R., Peixoto de Faria, J.G., Rossi, R.
Format: Article
Language:English
Subjects:
Cavity quantum electrodynamics
Cross decay rates
Open quantum systems
Quantum erasure
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Summary:•A setup aiming at the observation of quantum erasure is proposed in the cavity quantum electrodynamics domain.•The action of the environment on the field modes that store the which-way information is computed.•The effectiveness of the process of erasure depends on the class of states chosen to perform it.•The setup permits the measurement of cross decay rates. We investigate the role of the environment in a quantum erasure setup in the cavity quantum electrodynamics domain. Two slightly different schemes are analyzed. We show that the effects of the environment vary when a scheme is exchanged for another. This can be used to estimate the macroscopic parameters related to the system–environment microscopic correlations.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2015.04.023