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We experimentally studied the effect of standing wave pulses on an atom interferometer. Despite the external field perturbations the coherence is perfectly preserved for the conditions similar to quantum resonances of a quantum kicked rotor.
We experimentally demonstrate phase sensitivity at the standard quantum limit independent of phase using Bayesian phase estimation. This technique is unbiased and saturates the Cramer-Rao lower bound representing the optimum technique using coherent states.
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