Dissipative quantum dynamics of bosonic atoms in a shallow 1D optical lattice
Dissipative quantum dynamics of bosonic atoms in a shallow 1D optical lattice
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.
110403-[4pp]
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Isella, L.
1765053a-638b-49b4-af0c-1b92ce79bf2c
8 September 2005
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Isella, L.
1765053a-638b-49b4-af0c-1b92ce79bf2c
Ruostekoski, J. and Isella, L.
(2005)
Dissipative quantum dynamics of bosonic atoms in a shallow 1D optical lattice.
Physical Review Letters, 95 (11), .
(doi:10.1103/PhysRevLett.95.110403).
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.
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Published date: 8 September 2005
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Local EPrints ID: 29358
URI: http://eprints.soton.ac.uk/id/eprint/29358
ISSN: 0031-9007
PURE UUID: aef42195-50ec-4c92-bfd8-74697998b62a
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Date deposited: 11 May 2006
Last modified: 15 Mar 2024 07:31
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L. Isella
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