Universality of the Heisenberg Limit for Estimates of Random Phase Shifts

Michael J. W. Hall; Dominic W. Berry; Marcin Zwierz; Howard M. Wiseman

doi:10.1364/QELS.2012.QTu2E.7

Conference on Lasers and Electro-Optics 2012
OSA Technical Digest (Optica Publishing Group, 2012),
paper QTu2E.7
•https://doi.org/10.1364/QELS.2012.QTu2E.7

Universality of the Heisenberg Limit for Estimates of Random Phase Shifts

Michael J. W. Hall, Dominic W. Berry, Marcin Zwierz, and Howard M. Wiseman

Quantum Electronics and Laser Science Conference 2012

San Jose, California United States
6–11 May 2012
ISBN: 978-1-55752-943-5

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M. J. W. Hall, D. W. Berry, M. Zwierz, and H. M. Wiseman, "Universality of the Heisenberg Limit for Estimates of Random Phase Shifts," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (Optica Publishing Group, 2012), paper QTu2E.7.

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Abstract

Recent work has suggested that it is possible to perform phase measurements more accurately than the Heisenberg limit. We show that, when one averages over random phase shifts, the Heisenberg limit is universal.

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