Decoherence-free communication over multiaccess quantum channels

Maciej Demianowicz

doi:10.1142/s1230161213500078

Decoherence-free communication over multiaccess quantum channels

Abstract

In this paper we consider decoherence-free communication over multiple access and k-user quantum channels. First, we concentrate on a hermitian unitary noise model U for a two-access bi-unitary channel and show that in this case a decoherence-free code exists if the space of Schmidt matrices of an eigensubspace of U exhibits certain properties of decomposability. Then, we show that our technique is also applicable for generic random unitary two-access channels. Finally, we consider the applicability of the result to the case of a larger number of senders and general Kraus operators.

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Maciej Demianowicz dr hab. inż.

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: OPEN SYSTEMS & INFORMATION DYNAMICS no. 20, pages 1 - 18,
ISSN: 1230-1612
Language:: English
Publication year:: 2013
Bibliographic description:: Demianowicz M.: Decoherence-free communication over multiaccess quantum channels// OPEN SYSTEMS & INFORMATION DYNAMICS. -Vol. 20, nr. 2 (2013), s.1-18
DOI:: Digital Object Identifier (open in new tab) 10.1142/s1230161213500078
Verified by:: Gdańsk University of Technology