Demonstration of perfect coherence preservation for matter-waves perturbed by a delta-kicked rotor

Details Demonstration of perfect coherence preservation for matter-waves perturbed by a delta-kicked rotor Demonstration of perfect coherence preservation for matter-waves perturbed by a delta-kicked rotor

2008-03-28

arxiv.org/abs/0803.4153v2

Physics

Atomic Physics

Scientific paper

We demonstrate perfect coherence preservation in an atom interferometer perturbed by kicks from off-resonant standing wave pulses. Under most conditions, the decoherence induced by the pulses reduces the signal; however, the coherence is perfectly preserved when the kicking period is equal to the rational fraction of the inverse atomic recoil frequency, independent of the number or the randomness of the strength of the applied kicks. The width narrowing of coherence revival as a function of increasing kick number and strength provides a new accurate measurement of the recoil frequency.

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