Braun, Daniel, Adesso, Gerardo, Benatti, Fabio et al. (4 more authors) (2018) Quantum enhanced measurements without entanglement. Reviews of Modern Physics. 035006. ISSN 0034-6861
Abstract
Quantum-enhanced measurements exploit quantum mechanical effects for increasing the sensitivity of measurements of certain physical parameters and have great potential for both fundamental science and concrete applications. Most of the research has so far focused on using highly entangled states, which are, however, difficult to produce and to stabilize for a large number of constituents. In the following we review alternative mechanisms, notably the use of more general quantum correlations such as quantum discord, identical particles, or non-trivial hamiltonians; the estimation of thermodynamical parameters or parameters characterizing non-equilibrium states; and the use of quantum phase transitions. We describe both theoretically achievable enhancements and enhanced sensitivities, not primarily based on entanglement, that have already been demonstrated experimentally, and indicate some possible future research directions.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | 44 pages, including 7 pages of references © 2018 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Keywords: | quant-ph,cond-mat.mes-hall,cond-mat.quant-gas,physics.optics |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Computer Science (York) |
Depositing User: | Pure (York) |
Date Deposited: | 17 Apr 2018 15:10 |
Last Modified: | 16 Oct 2024 14:40 |
Published Version: | https://doi.org/10.1103/RevModPhys.90.035006 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/RevModPhys.90.035006 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:129744 |
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Filename: RevModPhys.90.035006.pdf
Description: Quantum-enhanced measurements without entanglement