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A class of symmetric controlled quantum operations

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Title A class of symmetric controlled quantum operations
Author Vaccaro, Joan Alfina; Steuernagel, O.; Huelga, S.F.
Journal Name Journal of Physics A:Mathematical and General
Year Published 2001
Place of publication Bristol, UK
Publisher Institute of Physics Publishing
Abstract Certain quantum gates, such as the controlled-NOT gate, are symmetric in terms of the operation of the control system upon the target system and vice versa. However, no operational criteria yet exist for establishing whether or not a given quantum gate is symmetrical in this sense. We consider a restricted, yet broad, class of two-party controlled gate operations for which the gate transforms a reference state of the target into one of an orthogonal set of states. We show that for this class of gates it is possible to establish a simple necessary and sufficient condition for the gate operation to be symmetric.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.iop.org/EJ/journal/JPhysA
Alternative URI http://dx.doi.org/10.1088/0305-4470/34/35/330
Copyright Statement Copyright 2001 Institute of Physics Publishing. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher.Please refer to the journal's website for access to the definitive, published version.
Volume 34
Page from 7057
Page to 7066
ISSN 0305-4470
Date Accessioned 2006-07-11
Date Available 2009-12-15T03:18:21Z
Language en_AU
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science
Subject PRE2009-Theoretical Physics
URI http://hdl.handle.net/10072/15495
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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