Sensitivity test of a blue-detuned dipole trap designed for parity non-conservation measurements in Fr

Details Sensitivity test of a blue-detuned dipole trap designed for parity non-conservation measurements in Fr Sensitivity test of a blue-detuned dipole trap designed for parity non-conservation measurements in Fr

2012-04-23

arxiv.org/abs/1204.5223v1

Rev. Sci. Instrum. 83, 043106 (2012)

Physics

Atomic Physics

12 pages, 4 figures

Scientific paper

10.1063/1.3701714

A dynamic blue-detuned optical dipole trap with stable $^{87}Rb$ atoms produces a differential ac Stark shift of 18 Hz in the ground state hyperfine transition, and it preserves the ground state hyperfine superpositions for a long coherence time of 180 ms. The trapped atoms undergoing microwave Rabi oscillations are sensitive to a small signal, artificially generated with a second microwave source, phase locked to the first allow- ing a simple and effective method for determining signal-to-noise ratio limits through interference techniques. This provides an excellent means of calibrating sensitivity in experiments such as our ongoing Fr parity non-conservation measurement.

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