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Adaptive Homodyne Measurement of Optical Phase
Open accessAbstract
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.
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Citations
Cited by
O'Brien, J. L., Furusawa, A., & Vučković, J. (2009) · Nature Photonics · doi:10.1038/nphoton.2009.229 · Cited by 2,388
General framework for estimating the ultimate precision limit in noisy quantum-enhanced metrology
Escher, B. M., de Matos Filho, R. L., & Davidovich, L. (2011) · Nature Physics · doi:10.1038/nphys1958 · Cited by 928
Entanglement-free Heisenberg-limited phase estimation
Higgins, B. L., Berry, D. W., Bartlett, S. D., Wiseman, H. M., & Pryde, G. J. (2007) · Nature · doi:10.1038/nature06257 · Cited by 628
Quantum-enhanced measurements without entanglement
Braun, D., Adesso, G., Benatti, F., Floreanini, R., Marzolino, U., Mitchell, M. W., & Pirandola, S. (2018) · Reviews of Modern Physics · doi:10.1103/revmodphys.90.035006 · Cited by 434
Quantum feedback: Theory, experiments, and applications
Zhang, J., Liu, Y.-X., Wu, R.-B., Jacobs, K., & Nori, F. (2017) · Physics Reports · doi:10.1016/j.physrep.2017.02.003 · Cited by 272
Metadata
- Authors
- Armen, M. A., Au, J. K., Stockton, J. K., Doherty, A. C., & Mabuchi, H.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2002-09-04
- Volume
- 89
- Issue
- 13
- Pages
- 133602-133602
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2026337802
- Cited by
- 311
- References
- 0
- FWCI
- 13.38
- Type
- journal article
- Language
- en
- Open access
- green
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- Armen, M. A., Au, J. K., Stockton, J. K., Doherty, A. C., & Mabuchi, H. (2002). Adaptive Homodyne Measurement of Optical Phase. Physical Review Letters. https://doi.org/10.1103/physrevlett.89.133602
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