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arXiv · 2202.12338

Squeezed Ground States in a Spin-1 Bose-Einstein Condensate

Lin Xin·Maryrose Barrios·Julia T. Cohen·Michael S. Chapman
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Abstract

We generate spin squeezed ground states in an atomic spin-1 Bose-Einstein condensate tuned nearthe quantum critical point between the polar and ferromagnetic quantum phases of the interactingspin ensemble. In contrast to typical non-equilibrium methods for preparing atomic squeezed statesby quenching through a quantum phase transition, squeezed ground states are time-stationary andremain squeezed for the lifetime of the condensate. A squeezed ground state with a metrologicalimprovement up to 6-8 dB and a constant squeezing angle maintained over 2 s is demonstrated.

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Lin Xin, Maryrose Barrios, Julia T. Cohen, Michael S. Chapman. 2022-02-24. Squeezed Ground States in a Spin-1 Bose-Einstein Condensate. https://doi.org/10.1103/physrevlett.131.133402

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