Reversibility in quantum measurement processes

Ueda, Masahito; Kitagawa, Masahiro

Physical Review Letters, 1992, 68(23), 3424-3427

Number of Access:456（2025-07-19 19:05 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/77657

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Title
Reversibility in quantum measurement processes
Creator
NRID
1000070271070 1000070271070
CreatorName
Ueda, Masahito
NRID
1000020252629 1000020252629
ORCID
0000-0002-7434-6472 0000-0002-7434-6472
researchmap permalink
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Scopus Author ID
8326938600 8326938600
CreatorName
Kitagawa, Masahiro
Abstract
A measurement process is logically reversible if the premeasurement density operator of the measured system can be calculated from the postmeasurement density operator and the readout of the measuring apparatus. We show that the continuous-measurement version of a quantum counter, unlike the conventional photon counter, performs a logically reversible measurement. The physical origin for such a distinction is found to be sensitivity to vacuum field fluctuations.
Publisher
American Physical Society
Source Title
Physical Review Letters
Volume (Issue)
68(23)
Page
3424-3427
Date of Issued
1992-06-08
Language
English
Handle URL
https://hdl.handle.net/11094/77657
PISSN
00319007
eISSN
10797114
NCID
AA00773679
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1103/PhysRevLett.68.3424
Access Rights
open access
CopyRight
Copyright (1992) by the American Physical Society
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article