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 proceeding 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	QCMC 2010 : Quantum Communication, Measurement and Computing
Subtitle of host publication	the Tenth International Conference
Editors	Timothy Ralph, Ping Koy Lam
Place of Publication	College Park, MD
Publisher	American Institute of Physics
Pages	129-132
Number of pages	4
ISBN (Print)	9780735409217
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
Number	1
Volume	1363

Other

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

Keywords

adaptive
parameter estimation
quantum optics
smoothing

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10.1063/1.3630163

Cite this

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 T. Ralph, & P. K. Lam (Eds.), QCMC 2010 : Quantum Communication, Measurement and Computing : the Tenth International Conference (pp. 129-132). (AIP conference proceedings; Vol. 1363, No. 1). American Institute of Physics. https://doi.org/10.1063/1.3630163

@inproceedings{cf4671c9603e4e0f92e7129a31cea325,

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",

publisher = "American Institute of Physics",

number = "1",

pages = "129--132",

editor = "Timothy Ralph and Lam, {Ping Koy}",

booktitle = "QCMC 2010 : Quantum Communication, Measurement and Computing",

address = "United States",

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 T Ralph & PK Lam (eds), QCMC 2010 : Quantum Communication, Measurement and Computing : the Tenth International Conference. AIP conference proceedings, no. 1, vol. 1363, American Institute of Physics, College Park, MD, 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.
QCMC 2010 : Quantum Communication, Measurement and Computing : the Tenth International Conference. ed. / Timothy Ralph; Ping Koy Lam. College Park, MD: American Institute of Physics, 2011. p. 129-132 (AIP conference proceedings; Vol. 1363, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding 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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BT - QCMC 2010 : Quantum Communication, Measurement and Computing

A2 - Ralph, Timothy

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

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Wheatley TA, Berry DW, Yonezawa H, Nakane D, Arao H, Pope DT et al. Adaptive optical phase estimation using time-symmetric quantum smoothing. In Ralph T, Lam PK, editors, QCMC 2010 : Quantum Communication, Measurement and Computing : the Tenth International Conference. College Park, MD: American Institute of Physics. 2011. p. 129-132. (AIP conference proceedings; 1). doi: 10.1063/1.3630163

Adaptive optical phase estimation using time-symmetric quantum smoothing

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