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arXiv:1111.1694 · Nature Physics

Spin-nematic squeezed vacuum in a quantum gas

Christopher D. Hamley, Corey Gerving, Thai M. Hoang, Eva Bookjans, Michael Chapman

Published Feb 24, 2012• 325 citations
arXivHTMLPDF
DOI
10.1038/nphys2245

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We propose a scheme to store the spin-nematic squeezing in a spinor Bose-Einstein condensate by applying periodic microwave pulses. For a proper pulse period and phase shift, the squeezing can be enhanced and maintained for a long time, which realizes the storage of the maximal squeezing. We also propose a method to generate the spin-nematic squeezed vacuum, which is associated with negligible occupation of the squeezed modes, through an adiabatic sweep of the magnetic field. It is shown that the method can be readily implemented for both ferromagnetic and antiferromagnetic condensates.