Adaptive optical phase estimation using time-symmetric quantum smoothing

T. A. Wheatley; D. W. Berry; H. Yonezawa; D. Nakane; H. Arao; D. T. Pope; T. C. Ralph; H. M. Wiseman; A. Furusawa; E. H. Huntington

doi:10.1063/1.3630163

Adaptive optical phase estimation using time-symmetric quantum smoothing

T. A. Wheatley^*, D. W. Berry, H. Yonezawa, D. Nakane, H. Arao, D. T. Pope, T. C. Ralph, H. M. Wiseman, A. Furusawa, E. H. Huntington

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present an experimental demonstration of quantum smoothing, a non causal version of quantum parameter estimation that has applications from gravitational wave detection to quantum key distribution. An existing technique for this type of parameter estimation is quantum filtering, which uses past observations only. The technique presented here is time-symmetric that uses past and future observations to obtain a more precise estimate. We couple this innovative estimation technique with an adaptive detection scheme to demonstrate an estimation of the optical phase of light measured to be 2.24 ± 0.14 times better than the standard quantum limit. This approaches our theoretically derived prediction of a mean square error improvement of 2√2 times over the standard quantum limit [1].

Original language	English
Title of host publication	Quantum Communication, Measurement and Computing, QCMC 2010 - The Tenth International Conference
Pages	129-132
Number of pages	4
DOIs	https://doi.org/10.1063/1.3630163
Publication status	Published - 2011
Externally published	Yes
Event	10th International Conference on Quantum Communication, Measurement And Computing, QCMC 2010 - Brisbane, QLD, Australia Duration: 19 Jul 2010 → 23 Jul 2010

Publication series

Name	AIP Conference Proceedings
Volume	1363
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	10th International Conference on Quantum Communication, Measurement And Computing, QCMC 2010
Country/Territory	Australia
City	Brisbane, QLD
Period	19/07/10 → 23/07/10

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10.1063/1.3630163

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Wheatley, T. A., Berry, D. W., Yonezawa, H., Nakane, D., Arao, H., Pope, D. T., Ralph, T. C., Wiseman, H. M., Furusawa, A., & Huntington, E. H. (2011). Adaptive optical phase estimation using time-symmetric quantum smoothing. In Quantum Communication, Measurement and Computing, QCMC 2010 - The Tenth International Conference (pp. 129-132). (AIP Conference Proceedings; Vol. 1363). https://doi.org/10.1063/1.3630163

@inproceedings{0e1d0f42027242eb8e4a235a5d051060,

title = "Adaptive optical phase estimation using time-symmetric quantum smoothing",

abstract = "We present an experimental demonstration of quantum smoothing, a non causal version of quantum parameter estimation that has applications from gravitational wave detection to quantum key distribution. An existing technique for this type of parameter estimation is quantum filtering, which uses past observations only. The technique presented here is time-symmetric that uses past and future observations to obtain a more precise estimate. We couple this innovative estimation technique with an adaptive detection scheme to demonstrate an estimation of the optical phase of light measured to be 2.24 ± 0.14 times better than the standard quantum limit. This approaches our theoretically derived prediction of a mean square error improvement of 2√2 times over the standard quantum limit [1].",

keywords = "adaptive, parameter estimation, quantum optics, smoothing",

author = "Wheatley, {T. A.} and Berry, {D. W.} and H. Yonezawa and D. Nakane and H. Arao and Pope, {D. T.} and Ralph, {T. C.} and Wiseman, {H. M.} and A. Furusawa and Huntington, {E. H.}",

year = "2011",

doi = "10.1063/1.3630163",

language = "English",

isbn = "9780735409217",

series = "AIP Conference Proceedings",

pages = "129--132",

booktitle = "Quantum Communication, Measurement and Computing, QCMC 2010 - The Tenth International Conference",

note = "10th International Conference on Quantum Communication, Measurement And Computing, QCMC 2010 ; Conference date: 19-07-2010 Through 23-07-2010",

}

Wheatley, TA, Berry, DW, Yonezawa, H, Nakane, D, Arao, H, Pope, DT, Ralph, TC, Wiseman, HM, Furusawa, A & Huntington, EH 2011, Adaptive optical phase estimation using time-symmetric quantum smoothing. in Quantum Communication, Measurement and Computing, QCMC 2010 - The Tenth International Conference. AIP Conference Proceedings, vol. 1363, pp. 129-132, 10th International Conference on Quantum Communication, Measurement And Computing, QCMC 2010, Brisbane, QLD, Australia, 19/07/10. https://doi.org/10.1063/1.3630163

Adaptive optical phase estimation using time-symmetric quantum smoothing. / Wheatley, T. A.; Berry, D. W.; Yonezawa, H. et al.
Quantum Communication, Measurement and Computing, QCMC 2010 - The Tenth International Conference. 2011. p. 129-132 (AIP Conference Proceedings; Vol. 1363).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Adaptive optical phase estimation using time-symmetric quantum smoothing

AU - Wheatley, T. A.

AU - Berry, D. W.

AU - Yonezawa, H.

AU - Nakane, D.

AU - Arao, H.

AU - Pope, D. T.

AU - Ralph, T. C.

AU - Wiseman, H. M.

AU - Furusawa, A.

AU - Huntington, E. H.

PY - 2011

Y1 - 2011

N2 - We present an experimental demonstration of quantum smoothing, a non causal version of quantum parameter estimation that has applications from gravitational wave detection to quantum key distribution. An existing technique for this type of parameter estimation is quantum filtering, which uses past observations only. The technique presented here is time-symmetric that uses past and future observations to obtain a more precise estimate. We couple this innovative estimation technique with an adaptive detection scheme to demonstrate an estimation of the optical phase of light measured to be 2.24 ± 0.14 times better than the standard quantum limit. This approaches our theoretically derived prediction of a mean square error improvement of 2√2 times over the standard quantum limit [1].

AB - We present an experimental demonstration of quantum smoothing, a non causal version of quantum parameter estimation that has applications from gravitational wave detection to quantum key distribution. An existing technique for this type of parameter estimation is quantum filtering, which uses past observations only. The technique presented here is time-symmetric that uses past and future observations to obtain a more precise estimate. We couple this innovative estimation technique with an adaptive detection scheme to demonstrate an estimation of the optical phase of light measured to be 2.24 ± 0.14 times better than the standard quantum limit. This approaches our theoretically derived prediction of a mean square error improvement of 2√2 times over the standard quantum limit [1].

KW - adaptive

KW - parameter estimation

KW - quantum optics

KW - smoothing

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U2 - 10.1063/1.3630163

DO - 10.1063/1.3630163

M3 - Conference contribution

AN - SCOPUS:80955122752

SN - 9780735409217

T3 - AIP Conference Proceedings

SP - 129

EP - 132

BT - Quantum Communication, Measurement and Computing, QCMC 2010 - The Tenth International Conference

T2 - 10th International Conference on Quantum Communication, Measurement And Computing, QCMC 2010

Y2 - 19 July 2010 through 23 July 2010

ER -

Adaptive optical phase estimation using time-symmetric quantum smoothing

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