Optimal Gaussian squeezed states for atom interferometry in the presence of phase diffusion

Igor Tikhonenkov, Michael G. Moore, Amichay Vardi

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We optimize the signal-to-noise ratio of a Mach-Zehnder atom interferometer with Gaussian squeezed input states in the presence interactions. For weak interactions, our results coincide with those of Huang and Moore, with an optimal initial number variance σoN1/3 and an optimal signal-to-noise ratio soN2/3 for the total atom number N. As the interaction strength u increases past unity, phase diffusion becomes dominant, leading to a transition in the optimal squeezing from initial number squeezing to initial phase squeezing with σouN and soN/u shot-noise scaling. The initial phase squeezing translates into hold-time number squeezing, which is less sensitive to interactions than coherent states and improves so by a factor of u.

Original languageEnglish
Article number043624
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume82
Issue number4
DOIs
StatePublished - 26 Oct 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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