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

K. Pawłowski, Matteo Fadel, Philipp Treutlein, Y. Castin, A. Sinatra

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

We study theoretically the interaction-induced generation of mesoscopic coherent spin state superpositions (small-particle-number 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-state fidelities.

Original languageEnglish (US)
Article number063609
JournalPhysical Review A
Volume95
Issue number6
DOIs
StatePublished - Jun 15 2017
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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