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Quantum metrology beyond the classical limit under the effect of dephasing

Abstract:

Quantum sensors have the potential to outperform their classical counterparts. For classical sensing, the uncertainty of the estimation of the target fields scales inversely with the square root of the measurement time T. On the other hand, by using quantum resources, we can reduce this scaling of the uncertainty with time to 1/T. However, as quantum states are susceptible to dephasing, it has not been clear whether we can achieve sensitivities with a scaling of 1/T for a measurement time lon...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.120.140501

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
More from this funder
Funding agency for:
Benjamin, S
Grant:
EP/M013243/1
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
120
Issue:
14
Article number:
140501
Publication date:
2018-04-05
Acceptance date:
2018-02-21
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
834303
Pubs id:
pubs:834303
UUID:
uuid:1b2cc34b-0f87-4b60-957b-a2eb63f71841
Local pid:
pubs:834303
Deposit date:
2018-04-07

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