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Quantum enhanced multiple phase estimation.

Abstract:

We study the simultaneous estimation of multiple phases as a discretized model for the imaging of a phase object. We identify quantum probe states that provide an enhancement compared to the best quantum scheme for the estimation of each individual phase separately as well as improvements over classical strategies. Our strategy provides an advantage in the variance of the estimation over individual quantum estimation schemes that scales as O(d), where d is the number of phases. Finally, we st...

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Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
Journal:
Physical Review Letters
Volume:
111
Issue:
7
Pages:
070403
Publication date:
2013-08-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
420823
Language:
English
Pubs id:
pubs:420823
UUID:
uuid:ab3d3cee-e811-434b-a167-494449b5a6dc
Local pid:
pubs:420823
Deposit date:
2013-11-16

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