JOSEPHSON DYNAMICS OF A BOSE–EINSTEIN CONDENSATE IN AN ACCELERATED DOUBLE-WELL POTENTIAL
2007 ◽
Vol 21
(07)
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pp. 1067-1075
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Motivated by a recent experiment on Bloch oscillation of Bose–Einstein condensates (BEC) in accelerated optical lattices, we consider the Josephson dynamics of a BEC in an accelerated double-well potential. We show that acceleration suppresses coherent population / phase oscillation between the two wells. Accelerating the double-well renders the Josephson coupling energy EJ time-dependent and this emerges as a source of dissipation. This dissipative mechanism helps to stabilize the system. The results are used to interpret a recent experimental result (M. Jona-Lasinio, O. Morsh, M. Cristiani E. Arimonod and C. Menotti, cond-mat / 0501572).
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Keyword(s):
2014 ◽
Vol 28
(04)
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pp. 1450026
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