Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock
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Leroux-2010-Orientation-Dependen.pdf
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Author(s)
Leroux, Ian Daniel
Schleier-Smith, Monika Helene
Vuletic, Vladan
Date Issued
March 2010
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Leroux, Ian D., Monika H. Schleier-Smith, and Vladan Vuletic. "Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock." Physical Review Letters 104.25 (2010): 250801. © 2010 The American Physical Society
Version
Final published version
Abstract
We study experimentally the application of a class of entangled states, squeezed spin states, to the improvement of atomic-clock precision. In the presence of anisotropic noise, the entanglement lifetime is strongly dependent on squeezing orientation. We measure the Allan deviation spectrum of a clock operated with a phase-squeezed input state. For averaging times up to 50 s the squeezed clock achieves a given precision 2.8(3) times faster than a clock operating at the standard quantum limit.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.104.250801
