Ruostekoski, J. and Isella, L. (2005) Dissipative quantum dynamics of bosonic atoms in a shallow 1D optical lattice. Physical review letters, 95 (11): 110403. ISSN 1079-7114
Full text not available from this repository.Abstract
We theoretically study the dipolar motion of bosonic atoms in a very shallow, strongly confined 1D optical lattice using the parameters of the recent experiment [C. D. Fertig et al., Phys. Rev. Lett. 94, 120403 (2005)]. We find that, due to momentum uncertainty, a small, but non-negligible, atom population occupies the unstable velocity region of the corresponding classical dynamics, resulting in the observed dissipative atom transport. This population is generated even in a static vapor, due to quantum fluctuations which are enhanced by the lattice and the confinement, and is not notably affected by the motion of atoms or finite temperature.