Adaptive Measurements in the Optical Quantum Information Laboratory

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Title Adaptive Measurements in the Optical Quantum Information Laboratory
Author Wiseman, Howard Mark; Berry, Dominic W.; Bartlett, Stephen D.; Higgins, Brendon Lloyd; Pryde, Geoff
Journal Name IEEE Journal of Selected Topics in Quantum Electronics
Year Published 2009
Place of publication United States
Publisher IEEE
Abstract Adaptive techniques make practical many quantum measurements that would otherwise be beyond current laboratory capabilities. For example, they allow discrimination of nonorthogonal states with a probability of error equal to the Helstrom bound, measurement of the phase of a quantum oscillator with accuracy approaching (or in some cases attaining) the Heisenberg limit (HL), and estimation of phase in interferometry with a variance scaling at the HL, using only single qubit measurement and control. Each of these examples has close links with quantum information, in particular, experimental optical quantum information: the first is a basic quantum communication protocol; the second has potential application in linear optical quantum computing; the third uses an adaptive protocol inspired by the quantum phase estimation algorithm.We discuss each of these examples and their implementation in the laboratory, but concentrate upon the last, which was published most recently [Higgins et al., Nature, vol. 450, p. 393, 2007].
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IEEE.
Volume 15
Issue Number 6
Page from 1661
Page to 1672
ISSN 1077-260X
Date Accessioned 2009-12-18
Language en_AU
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Quantum Information, Computation and Communication; Quantum Optics
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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