Superfluid drag of two-species Bose-Einstein condensates in optical lattices
Hofer, Patrick P. LU
; Bruder, C.
and Stojanović, Vladimir M.
(2012)
In Physical Review A (Atomic, Molecular and Optical Physics)
86(3).
- Abstract
We study two-species Bose-Einstein condensates in quasi-two-dimensional optical lattices of varying geometry and potential depth. Based on the numerically exact Bloch and Wannier functions obtained using the plane-wave expansion method, we quantify the drag (entrainment coupling) between the condensate components. This drag originates from the (short-range) interspecies interaction and increases with the kinetic energy. As a result of the interplay between interaction and kinetic energy effects, the superfluid-drag coefficient shows a nonmonotonic dependence on the lattice depth. To make contact with future experiments, we quantitatively investigate the drag for mass ratios corresponding to relevant atomic species.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/fa388180-7f0e-417c-aa70-35fe8ec2bec4
- author
- Hofer, Patrick P.
LU
; Bruder, C.
and Stojanović, Vladimir M.
- publishing date
- 2012-09-24
- type
- Contribution to journal
- publication status
- published
- in
- Physical Review A (Atomic, Molecular and Optical Physics)
- volume
- 86
- issue
- 3
- article number
- 033627
- publisher
- American Physical Society
- external identifiers
-
- scopus:84866689501
- ISSN
- 1050-2947
- DOI
- 10.1103/PhysRevA.86.033627
- language
- English
- LU publication?
- no
- id
- fa388180-7f0e-417c-aa70-35fe8ec2bec4
- date added to LUP
- 2019-05-14 09:52:56
- date last changed
- 2022-04-25 23:38:59
@article{fa388180-7f0e-417c-aa70-35fe8ec2bec4,
abstract = {{<p>We study two-species Bose-Einstein condensates in quasi-two-dimensional optical lattices of varying geometry and potential depth. Based on the numerically exact Bloch and Wannier functions obtained using the plane-wave expansion method, we quantify the drag (entrainment coupling) between the condensate components. This drag originates from the (short-range) interspecies interaction and increases with the kinetic energy. As a result of the interplay between interaction and kinetic energy effects, the superfluid-drag coefficient shows a nonmonotonic dependence on the lattice depth. To make contact with future experiments, we quantitatively investigate the drag for mass ratios corresponding to relevant atomic species.</p>}},
author = {{Hofer, Patrick P. and Bruder, C. and Stojanović, Vladimir M.}},
issn = {{1050-2947}},
language = {{eng}},
month = {{09}},
number = {{3}},
publisher = {{American Physical Society}},
series = {{Physical Review A (Atomic, Molecular and Optical Physics)}},
title = {{Superfluid drag of two-species Bose-Einstein condensates in optical lattices}},
url = {{http://dx.doi.org/10.1103/PhysRevA.86.033627}},
doi = {{10.1103/PhysRevA.86.033627}},
volume = {{86}},
year = {{2012}},
}