Metastable states of a gas of dipolar bosons in a 2D optical lattice
arXiv:cond-mat/0612498 · doi:10.1103/PhysRevLett.98.235301
Abstract
We investigate the physics of dipolar bosons in a two dimensional optical lattice. It is known that due to the long-range character of dipole-dipole interaction, the ground state phase diagram of a gas of dipolar bosons in an optical lattice presents novel quantum phases, like checkerboard and supersolid phases. In this paper, we consider the properties of the system beyond its ground state, finding that it is characterised by a multitude of almost degenerate metastable states, often competing with the ground state. This makes dipolar bosons in a lattice similar to a disordered system and opens possibilities of using them for quantum memories.
small improvements in the text, Fig.4 replaced, added and updated references. 4 pages, 4 figures, to appear in Phys. Rev. Lett
References in corpus (9)
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Bose-Einstein condensation of chromium
- Spatial quantum noise interferometry in expanding ultracold atom clouds
- Observation of dipole-dipole interaction in a degenerate quantum gas
- Supersolids versus phase separation in two-dimensional lattice bosons
- Supersolid Helium at High Pressure
- Density wave and supersolid phases of correlated bosons in an optical lattice
- Searching for a Supersolid in Cold Atom Optical Lattices
- Quantum polarization spectroscopy of ultracold spinor gases
Cited by in corpus (11)
- Strong dipolar effects in a quantum ferrofluid
- d-wave collapse and explosion of a dipolar Bose-Einstein condensate
- Mixtures of strongly interacting bosons in optical lattices
- Some remarks on the coherent-state variational approach to nonlinear boson models
- Meta-nematic, smectic and crystalline phases of dipolar fermions in an optical lattice
- Ground state of low dimensional dipolar gases: linear and zigzag chains
- Structure and melting behavior of classical bilayer crystals of dipoles
- Physical replicas and the Bose-glass in cold atomic gases
- Unconventional quantum phases of lattice bosonic mixtures
- Fermions out of Dipolar Bosons in the lowest Landau level
- Glassy features of a Bose Glass