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arXiv · 1208.2349

Finite temperature effects in two-mode bosonic Josephson junctions

G. Mazzarella·L. Salasnich·F. Toigo
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Abstract

We analyze the effects of the temperature on a bosonic Josephson junction realized with ultracold and dilute atoms in a double-well potential. Starting from the eigenstates of the two-site Bose-Hubbard Hamiltonian, we calculate the coherence visibility and the fluctuation of the on-site occupation number and study them as functions of the temperature. We show that, contrary to naive expectations, when the boson-boson interaction is suitably chosen thermal effects can increase the coherence visibility and reduce the on-site number fluctuation.

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G. Mazzarella, L. Salasnich, F. Toigo. 2012-08-11. Finite temperature effects in two-mode bosonic Josephson junctions. https://arxiv.org/abs/1208.2349

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