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Adaptive Homodyne Measurement of Optical Phase

Armen, Michael A. and Au, John K. and Stockton, John K. and Doherty, Andrew C. and Mabuchi, Hideo (2002) Adaptive Homodyne Measurement of Optical Phase. Physical Review Letters, 89 (13). Art. No. 133602. ISSN 0031-9007. https://resolver.caltech.edu/CaltechAUTHORS:ARMprl02

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Abstract

We present an experimental demonstration of the power of feedback in quantum metrology, confirming the predicted [H. M. Wiseman, Phys. Rev. Lett. 75, 4587 (1995)] superior performance of an adaptive homodyne technique for single-shot measurement of optical phase. For measurements performed on weak coherent states with no prior knowledge of the signal phase, adaptive homodyne estimation approaches closer to the intrinsic quantum uncertainty than any previous technique. Our results underscore the importance of real-time feedback for reaching quantum limits in measurement and control.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevLett.89.133602DOIArticle
https://arxiv.org/abs/quant-ph/0204005arXivDiscussion Paper
Additional Information:© 2002 The American Physical Society. Received 1 April 2002; published 4 September 2002. This work was supported by the NSF (PHY-9987541, EIA-0086038) and ONR (N00014-00-1-0479).
Funders:
Funding AgencyGrant Number
NSFPHY-9987541
NSFEIA-0086038
Office of Naval Research (ONR)N00014-00-1-0479
Issue or Number:13
Classification Code:PACS numbers: 42.50.Dv, 03.65.Ta, 03.67.–a, 06.90.+v
Record Number:CaltechAUTHORS:ARMprl02
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:ARMprl02
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.89.133602
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1826
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:20 Feb 2006
Last Modified:02 Oct 2019 22:47

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