Clark, LA, Stokes, A and Beige, A orcid.org/0000-0001-7230-4220 (2016) Quantum-enhanced metrology with the single-mode coherent states of an optical cavity inside a quantum feedback loop. Physical Review A, 94 (2). 023840. ISSN 1050-2947
Abstract
In this paper, we use the nonlinear generator of dynamics of the individual quantum trajectories of an optical cavity inside an instantaneous quantum feedback loop to measure the phase shift between two pathways of light with a precision above the standard quantum limit. The feedback laser provides a reference frame and constantly increases the dependence of the state of the resonator on the unknown phase. Since our quantum metrology scheme can be implemented with current technology and does not require highly efficient single photon detectors, it should be of practical interest until highly entangled many-photon states become more readily available.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 American Physical Society. This is an author produced version of a paper published in Physical Review A. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 25 Oct 2016 09:16 |
Last Modified: | 21 Jan 2018 20:54 |
Published Version: | https://doi.org/10.1103/PhysRevA.94.023840 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevA.94.023840 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:106377 |