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On the Improvement of Frequency Stardards with Quantum Entanglement

Abstract:
The optimal precision of frequency measurements in the presence of decoherence is discussed. We analyze different preparations of n two level systems as well as different measurement procedures. We show that standard Ramsey spectroscopy on uncorrelated atoms and optimal measurements on maximally entangled states provide the same resolution. The best resolution is achieved using partially entangled preparations with a high degree of symmetry.
Publication status:
Published

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Publisher copy:
10.1103/PhysRevLett.79.3865

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author


Journal:
Phys.Rev.Lett. More from this journal
Volume:
79
Issue:
20
Pages:
3865
Publication date:
1997-07-04
DOI:
EISSN:
1079-7114
ISSN:
0031-9007


Language:
English
Keywords:
Pubs id:
pubs:19848
UUID:
uuid:e267dc10-3df5-4623-a34f-554c3ef81303
Local pid:
pubs:19848
Source identifiers:
19848
Deposit date:
2012-12-19

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