Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock

Journal Article · Fri Jun 25 04:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.250801· OSTI ID:21410427

Leroux, Ian D; Schleier-Smith, Monika H; Vuletic, Vladan ^[1]

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1. Department of Physics, MIT-Harvard Center for Ultracold Atoms and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

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.

• OSTI ID: 21410427
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 104; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCURACY
ANGULAR MOMENTUM
ANISOTROPY
ATOMIC CLOCKS
LIFETIME
NOISE
ORIENTATION
PARTICLE PROPERTIES
QUANTUM ENTANGLEMENT
SPECTRA
SPIN