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arXiv · 1511.03146

Parametric squeezing amplification of Bose-Einstein condensates

Georg Jäger·Tarik Berrada·Jörg Schmiedmayer·Thorsten Schumm·Ulrich Hohenester
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Abstract

We theoretically investigate the creation of squeezed states of a Bose-Einstein Condensate (BEC) trapped in a magnetic double well potential. The number or phase squeezed states are created by modulating the tunnel coupling between the two wells periodically with twice the Josephson frequency, i.e., through parametric amplification. Simulations are performed with the multi configurational Hartree method for bosons (MCTDHB). We employ optimal control theory to bring the condensate to a complete halt at a final time, thus creating a highly squeezed state (squeezing factor of 0.12, $ξ_S^2=-18$ dB) suitable for atom interferometry.

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Georg Jäger, Tarik Berrada, Jörg Schmiedmayer, Thorsten Schumm, Ulrich Hohenester. 2015-11-10. Parametric squeezing amplification of Bose-Einstein condensates. https://doi.org/10.1103/physreva.92.053632

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