A cavity-QED scheme for Heisenberg-limited interferometry

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Vitali, David and Kuhr, Stefan and Brune, Michel and Raimond, Jean-Michel (2007) A cavity-QED scheme for Heisenberg-limited interferometry. Journal of Modern Optics, 54 (11). pp. 1551-1567. ISSN 1362-3044 (https://doi.org/10.1080/09500340600741124)

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Abstract

We propose a Ramsey interferometry experiment using an entangled state of N atoms to approach the Heisenberg limit for the estimation of an atomic phase shift if the atom number parity is perfectly determined. In a more realistic situation, due to statistical fluctuations of the atom source and the finite detection efficiency, the parity is unknown. We then achieve about half the Heisenberg limit. The scheme involves an ensemble of circular Rydberg atoms which dispersively interact successively with two initially empty microwave cavities. The scheme does not require very high-Q cavities. An experimental realization with about ten entangled Rydberg atoms is achievable with a state of art apparatus.

ORCID iDs

Vitali, David, Kuhr, Stefan ORCID logoORCID: https://orcid.org/0000-0001-8386-5357, Brune, Michel and Raimond, Jean-Michel;
  • Item type:Article
    ID code:43783
    Dates:
    Date
    Event
    2007
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:09 May 2013 14:08
    Last modified:11 Nov 2024 10:24
    URI:https://strathprints.strath.ac.uk/id/eprint/43783
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