Optical lattices for atom-based quantum microscopy

Cold-atom optical lattices as quantum analog simulators for aperiodic one-dimensional localization without disorder

V. W. Scarola and S. Das Sarma Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA Received 16 June 2005; published 28 April 2006 Cold-atom optical lattices allow for the study of quantum localization and mobility edges in a disorder-free environment. We predict the existence of an Anderson-like insulator with sharp mobility edge...

Optimal control of atom transport for quantum gates in optical lattices

G. De Chiara, T. Calarco, M. Anderlini, S. Montangero, P. J. Lee, B. L. Brown, W. D. Phillips, and J. V. Porto ECT*, BEC-CNR-INFM, Università di Trento, 38050 Povo (TN), Italy Grup d’Optica, Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain Institute for Quantum Information Processing, University of Ulm, D-89069 Ulm, Germany INFN, Sezione di Firenze, via Sansone ...

Searching for a supersolid in cold-atom optical lattices

Fibonacci Optical Lattices for Tunable Quantum Quasicrystals

We describe a new type of quasiperiodic optical lattice, created by a physical realization of the abstract cut-and-project construction underlying all quasicrystals. The resulting potential is a generalization of the Fibonacci tiling. Calculation of the energies and wavefunctions of ultracold atoms loaded into such a lattice demonstrate a multifractal energy spectrum, a singular continuous mome...

Quantum vortices in optical lattices

A vortex in a superfluid gas inside an optical lattice can behave as a massive particle moving in a periodic potential and exhibiting quantum properties. In this Letter we discuss these properties and show that the excitation of vortex motions in a two-dimensional lattice can lead to striking measurable changes in its dynamic response. It would be possible by means of Bragg spectroscopy to carr...