Discrimination of dephasing channels. (17th June 2022)

• Record Type: Journal Article
• Authors: Rexiti, Milajiguli; Memarzadeh, Laleh; Mancini, Stefano
• Is Part Of: Journal of physics. Volume 55:Number 24(2022)
• Publication Date: 2022-06-17
• Subjects: quantum channel discrimination -- quantum dephasing channel -- quantum measurements; Mathematical physics -- Periodicals; Statistical physics -- Periodicals; Quantum theory -- Periodicals; Matter -- Properties -- Periodicals; 530.105
• DOI: 10.1088/1751-8121/ac6d2c
• Languages: English
• ISSNs: 1751-8113

Abstract

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.