Quantum capacity of a deformed bosonic dephasing channel

In this paper, using the notion of nonlinear coherent states, we define a deformed bosonic dephasing channel modeling the impact of a Kerr medium on a quantum state, as it occurs, for instance, in quantum communication based on optical fibers. We show that, in certain regimes, the Kerr nonlinearity...

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Bibliographic Details
Published inOptical switching and networking Vol. 57; p. 100814
Main Authors Dehdashti, Shahram, Nötzel, Janis, van Loock, Peter
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.10.2025
Subjects
Dephasing channel
Kerr parameter
Non-linear coherent state
Quantum capacity
Kerr parameter
Non-linear coherent state
Dephasing channel
Quantum capacity
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Summary:In this paper, using the notion of nonlinear coherent states, we define a deformed bosonic dephasing channel modeling the impact of a Kerr medium on a quantum state, as it occurs, for instance, in quantum communication based on optical fibers. We show that, in certain regimes, the Kerr nonlinearity is able to compensate the dephasing. In addition, our studies reveal that the quantum capacity of the deformed bosonic dephasing channel can be greater than that of the undeformed, standard bosonic dephasing channel for certain nonlinearity parameters.
ISSN:1573-4277
DOI:10.1016/j.osn.2025.100814