Differential phase extraction in an atom gradiometer

  title={Differential phase extraction in an atom gradiometer},
  author={Franck Pereira Dos Santos},
  journal={arXiv: Atomic Physics},
We present here a method for the extraction of the differential phase of an atom gradiometer that exploits the correlation of the vibration signal measured by an auxiliary classical sensor, such as a seismometer or an accelerometer. We show that sensitivities close to the quantum projection noise limit can be reached, even when the vibration noise induces phase fluctuations larger than 2$\pi$. This method doesn't require the correlation between the atomic and classical signals to be perfect and… 

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