Discrimination of dephasing channels

Abstract The problem of dephasing channel discrimination is addressed for finite-dimensional systems. In particular, the optimization with respect to input states without energy constraint is solved analytically for qubit, qutrit and ququart. Additionally, it is shown that resorting to side entangle...

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Bibliographic Details
Published inJournal of physics. A, Mathematical and theoretical Vol. 55; no. 24; pp. 245301 - 245316
Main Authors Rexiti, Milajiguli, Memarzadeh, Laleh, Mancini, Stefano
Format Journal Article
LanguageEnglish
Published IOP Publishing 17.06.2022
Subjects
quantum channel discrimination
quantum dephasing channel
quantum measurements
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Summary:Abstract The problem of dephasing channel discrimination is addressed for finite-dimensional systems. In particular, the optimization with respect to input states without energy constraint is solved analytically for qubit, qutrit and ququart. Additionally, it is shown that resorting to side entanglement assisted strategy is completely useless in this case.
Bibliography:JPhysA-116909.R1
ISSN:1751-8113
1751-8121
DOI:10.1088/1751-8121/ac6d2c