Quantum-limited estimation of continuous spontaneous localization
Quantum-limited estimation of continuous spontaneous localization
We apply the formalism of quantum estimation theory to extract information about potential collapse mechanisms of the continuous spontaneous localisation (CSL) form. In order to estimate the strength with which the field responsible for the CSL mechanism couples to massive systems, we consider the optomechanical interaction between a mechanical resonator and a cavity field. Our estimation strategy passes through the probing of either the state of the oscillator or that of the electromagnetic field that drives its motion. In particular, we concentrate on all-optical measurements, such as homodyne and heterodyne measurements. We also compare the performances of such strategies with those of a spin-assisted optomechanical system, where the estimation of the CSL parameter is performed through time-gated spin-like measurements.
McMillen, S.
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Brunelli, M.
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Carlesso, M.
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Bassi, A.
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Ulbricht, H.
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Paris, M.G.A .
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Paternostro, M.
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25 January 2017
McMillen, S.
5970e2f9-3458-4cd5-a005-05959ba08550
Brunelli, M.
821e7c0c-3974-4d67-a361-7bf6fc9ec07a
Carlesso, M.
bdaf218c-85ae-43fb-a347-47800841078e
Bassi, A.
607b3bae-7360-4251-8546-5b199218377b
Ulbricht, H.
5060dd43-2dc1-47f8-9339-c1a26719527d
Paris, M.G.A .
33332f0c-ebf5-4949-91ed-2eda8e0a59a0
Paternostro, M.
d6ca6fc5-9a8b-4eb0-8a81-a5077fef3ad8
McMillen, S., Brunelli, M., Carlesso, M., Bassi, A., Ulbricht, H., Paris, M.G.A . and Paternostro, M.
(2017)
Quantum-limited estimation of continuous spontaneous localization.
Physical Review A, 95, [012132].
(doi:10.1103/PhysRevA.95.012132).
Abstract
We apply the formalism of quantum estimation theory to extract information about potential collapse mechanisms of the continuous spontaneous localisation (CSL) form. In order to estimate the strength with which the field responsible for the CSL mechanism couples to massive systems, we consider the optomechanical interaction between a mechanical resonator and a cavity field. Our estimation strategy passes through the probing of either the state of the oscillator or that of the electromagnetic field that drives its motion. In particular, we concentrate on all-optical measurements, such as homodyne and heterodyne measurements. We also compare the performances of such strategies with those of a spin-assisted optomechanical system, where the estimation of the CSL parameter is performed through time-gated spin-like measurements.
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Quantum-limited estimation of continuous spontaneous localization.pdf
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Accepted/In Press date: 24 October 2016
e-pub ahead of print date: 25 January 2017
Published date: 25 January 2017
Organisations:
Quantum, Light & Matter Group
Identifiers
Local EPrints ID: 402018
URI: http://eprints.soton.ac.uk/id/eprint/402018
ISSN: 1050-2947
PURE UUID: a1d6b98b-ccb7-4396-9146-f434d2bd0147
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Date deposited: 26 Oct 2016 13:56
Last modified: 21 Aug 2025 04:46
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Contributors
Author:
S. McMillen
Author:
M. Brunelli
Author:
M. Carlesso
Author:
A. Bassi
Author:
M.G.A . Paris
Author:
M. Paternostro
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