6533b854fe1ef96bd12aeb99
RESEARCH PRODUCT
Quantum localization and bound state formation in Bose-Einstein condensates
Fabrizio IlluminatiRoberto FranzosiSalvatore Marco Giampaolosubject
Atomic Physics (physics.atom-ph)FOS: Physical sciences01 natural sciencesSpectral linelocalization010305 fluids & plasmaslaw.inventionPhysics - Atomic PhysicslawQuantum mechanics0103 physical sciencesBound state010306 general physicsElectronic band structureQuantumPhysicsQuantum PhysicsAtomic and Molecular Physics and Optics3. Good healthExponential functionWeak localizationQuantum Gases (cond-mat.quant-gas)Excited stateQuantum electrodynamicsQuantum Physics (quant-ph)Condensed Matter - Quantum GasesBose–Einstein condensatedescription
We discuss the possibility of exponential quantum localization in systems of ultracold bosonic atoms with repulsive interactions in open optical lattices without disorder. We show that exponential localization occurs in the maximally excited state of the lowest energy band. We establish the conditions under which the presence of the upper energy bands can be neglected, determine the successive stages and the quantum phase boundaries at which localization occurs, and discuss schemes to detect it experimentally by visibility measurements. The discussed mechanism is a particular type of quantum localization that is intuitively understood in terms of the interplay between nonlinearity and a bounded energy spectrum.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-01-01 |