Metastable states of a gas of dipolar bosons in a 2D optical lattice
Year: 2007
Authors: Menotti C., Trefzger C., Lewenstein M.
Autors Affiliation: ICFO – Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain,
CRS BEC-INFM and Dipartimento di Fisica, Universita’ di Trento, I-38050 Povo, Italy;
ICREA and ICFO – Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain
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 Letter, we consider the properties of the system beyond its ground state, finding that it is characterized 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 as quantum memories.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 98 (23) Pages from: 235301-1 to: 235301-4
KeyWords: dipolar atoms; optical lattices; metastable statesDOI: 10.1103/PhysRevLett.98.235301ImpactFactor: 6.944Citations: 108data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-03References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here