Improvement of frequency standards with quantum entanglement
Huelga, S.F., Macchiavello, C., Pellizzari, T., Ekert, A.K., Plenio, M.B. and Cirac, J.
(1997)
Improvement of frequency standards with quantum entanglement.
pp. 3865-68.
ISSN 0031-9007
The optimal precision of frequency measurements in the presence of decoherence is discussed. We analyse different preparations of n two-level systems as well as different measurements procedures. We show that standard Ramsey spec- troscopy 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.
Item Type | Article |
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Date Deposited | 26 Jul 2024 11:12 |
Last Modified | 26 Jul 2024 11:13 |
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