Incommensurate superfluidity of bosons in a double-well optical lattice

Details Incommensurate superfluidity of bosons in a double-well optical lattice Incommensurate superfluidity of bosons in a double-well optical lattice

2008-04-24

arxiv.org/abs/0804.3977v4

Phys. Rev. Lett. 101, 125301 (2008)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures;

Scientific paper

10.1103/PhysRevLett.101.125301

We study bosons in the first excited Bloch band of a double-well optical lattice, recently realized at NIST. By calculating the relevant parameters from a realistic nonseparable lattice potential, we find that in the most favorable cases the boson lifetime in the first excited band can be several orders of magnitude longer than the typical nearest-neighbor tunnelling timescales, in contrast to that of a simple single-well lattice. In addition, for sufficiently small lattice depths the excited band has minima at nonzero momenta incommensurate with the lattice period, which opens a possibility to realize an exotic superfluid state that spontaneously breaks the time-reversal, rotational, and translational symmetries. We discuss possible experimental signatures of this novel state.

Affiliated with

Also associated with

No associations

Rating

Incommensurate superfluidity of bosons in a double-well optical lattice 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 Incommensurate superfluidity of bosons in a double-well optical lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Incommensurate superfluidity of bosons in a double-well optical lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-505659