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arXiv · 1703.07291

Mesoscopic quantum superpositions in bimodal Bose-Einstein condensates: decoherence and strategies to counteract it

Krzysztof Pawlowski·Matteo Fadel·Philipp Treutlein·Yvan Castin·Alice Sinatra
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Abstract

We study theoretically the interaction-induced generation of mesoscopic coherent spin state superpositions (small cat states) from an initial coherent spin state in bimodal Bose-Einstein condensates and the subsequent phase revival, including decoherence due to particle losses and fluctuations of the total particle number. In a full multimode description, we propose a preparation procedure of the initial coherent spin state and we study the effect of preexisting thermal fluctuations on the phase revival, and on the spin and orbito-spinorial cat fidelities.

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Krzysztof Pawlowski, Matteo Fadel, Philipp Treutlein, Yvan Castin, Alice Sinatra. 2017-03-21. Mesoscopic quantum superpositions in bimodal Bose-Einstein condensates: decoherence and strategies to counteract it. https://doi.org/10.1103/physreva.95.063609

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