Using off-diagonal confinement as a cooling method

Details Using off-diagonal confinement as a cooling method Using off-diagonal confinement as a cooling method

2010-08-31

arxiv.org/abs/1008.5388v2

Phys. Rev. A 82, 063631 (2010)

Physics

Condensed Matter

Quantum Gases

6 pages, 6 figures

Scientific paper

10.1103/PhysRevA.82.063631

In a recent letter [Phys. Rev. Lett. 104, 167201 (2010)] we proposed a new confining method for ultracold atoms on optical lattices, based on off-diagonal confinement (ODC). This method was shown to have distinct advantages over the conventional diagonal confinement (DC) that makes use of a trapping potential, including the existence of pure Mott phases and highly populated condensates. In this paper we show that the ODC method can also lead to temperatures that are smaller than with the conventional DC method, depending on the control parameters. We determine these parameters using exact diagonalizations for the hard-core case, then we extend our results to the soft-core case by performing quantum Monte Carlo (QMC) simulations for both DC and ODC systems at fixed temperatures, and analysing the corresponding entropies. We also propose a method for measuring the entropy in QMC simulations.

Affiliated with

Also associated with

No associations

Rating

Using off-diagonal confinement as a cooling method does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Using off-diagonal confinement as a cooling method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using off-diagonal confinement as a cooling method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-181393