Details
| Original language | English |
|---|---|
| Article number | 203005 |
| Journal | Physical Review Letters |
| Volume | 109 |
| Issue number | 20 |
| Publication status | Published - 14 Nov 2012 |
Abstract
We show that a time-dependent magnetic field inducing a periodically modulated scattering length may lead to interesting novel scenarios for cold gases in optical lattices, characterized by a nonlinear hopping depending on the number difference at neighboring sites. We discuss the rich physics introduced by this hopping, including pair superfluidity, exactly defect-free Mott-insulator states for finite hopping, and pure holon and doublon superfluids. We also address experimental detection, showing that the introduced nonlinear hopping may lead in harmonically trapped gases to abrupt drops in the density profile marking the interface between different superfluid regions.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Letters, Vol. 109, No. 20, 203005, 14.11.2012.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Ultracold lattice gases with periodically modulated interactions
AU - Rapp, Ákos
AU - Deng, Xiaolong
AU - Santos, Luis
PY - 2012/11/14
Y1 - 2012/11/14
N2 - We show that a time-dependent magnetic field inducing a periodically modulated scattering length may lead to interesting novel scenarios for cold gases in optical lattices, characterized by a nonlinear hopping depending on the number difference at neighboring sites. We discuss the rich physics introduced by this hopping, including pair superfluidity, exactly defect-free Mott-insulator states for finite hopping, and pure holon and doublon superfluids. We also address experimental detection, showing that the introduced nonlinear hopping may lead in harmonically trapped gases to abrupt drops in the density profile marking the interface between different superfluid regions.
AB - We show that a time-dependent magnetic field inducing a periodically modulated scattering length may lead to interesting novel scenarios for cold gases in optical lattices, characterized by a nonlinear hopping depending on the number difference at neighboring sites. We discuss the rich physics introduced by this hopping, including pair superfluidity, exactly defect-free Mott-insulator states for finite hopping, and pure holon and doublon superfluids. We also address experimental detection, showing that the introduced nonlinear hopping may lead in harmonically trapped gases to abrupt drops in the density profile marking the interface between different superfluid regions.
UR - http://www.scopus.com/inward/record.url?scp=84869022044&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.109.203005
DO - 10.1103/PhysRevLett.109.203005
M3 - Article
AN - SCOPUS:84869022044
VL - 109
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 20
M1 - 203005
ER -