Work

Profitable entanglement for channel discrimination

Year: 2023

Type: article

Abstract: We investigate the usefulness of side entanglement in discriminating between two generic qubit channels, up to unitary pre- and post-processing, and determine exact conditions under which it does enhance (as well as conditions under which it does not) the success probability. This is done in a constructive way by first analysing the problem for channels that are extremal in the set of completely positive and trace-preserving qubit linear maps and then for channels that are inside such a set.

Source: Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences

DOI: 10.1098/rspa.2022.0796

Authors: Samad Khabbazi Oskouei, Stefano Mancini, Milajiguli Rexiti

Institutions: Islamic Azad University of Varamin, Università di Camerino, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: bronze

Funder: European Commission

Awards: G434337789, Quantum readout techniques and technologies