Phys. Rev. Lett. 100, 103601 (2008) [4 pages]Nondestructive Probing of Rabi Oscillations on the Cesium Clock Transition near the Standard Quantum LimitReceived 9 November 2007; published 13 March 2008 We report on the nondestructive observation of Rabi oscillations on the Cs clock transition. The internal atomic state evolution of a dipole-trapped ensemble of cold atoms is inferred from the phase shift of a probe laser beam as measured using a Mach-Zehnder interferometer. We describe a single color as well as a two-color probing scheme. Using the latter, measurements of the collective pseudospin projection of atoms in a superposition of the clock states are performed and the observed spin fluctuations are shown to be close to the standard quantum limit. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.103601
DOI:
10.1103/PhysRevLett.100.103601
PACS:
42.50.Lc, 03.65.Ta, 06.30.Ft, 42.50.Nn
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