Scientific Results

Trap-modulation spectroscopy of the Mott-insulator transition in optical lattices

Year: 2009

Authors: Lignier H., Zenesini A., Ciampini D., Morsch O., Arimondo E., Montangero S., Pupillo G., Fazio R.

Autors Affiliation: Dipartimento di Fisica “E. Fermi,” CNR-INFM, Largo Pontecorvo 3, 56127 Pisa, Italy;
CNISM UdR, Università di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy;
Institut für Quanteninformationsverarbeitung, Universität Ulm, D-89069 Ulm, Germany;
NEST CNR-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy;
Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria;
Institute for Quantum Optics and Quantum Information, A-6020 Innsbruck, Austria

Abstract: We discuss a technique to probe the properties of an interacting cold atomic gas that can be viewed as a dynamical compressibility measurement. We apply this technique to the study of the superfluid-to-Mott-insulator quantum phase transition in one and three dimensions for a bosonic gas trapped in an optical lattice. Excitations of the system are detected by time-of-flight measurements. The experimental data for the one-dimensional case are in good agreement with the results of a time-dependent density-matrix-renormalization-group calculation.

Journal/Review: PHYSICAL REVIEW A

Volume: 79 (4)      Pages from: 041601  to: 041601

More Information: Financial support by MIUR under Project No. PRIN-2007 and the EU projects SCALA and NAMEQUAM is gratefully acknowledged. Numerical simulations in this work were done using the DMRG code released within the PwP project [25].
KeyWords: boson systems; metal-insulator transition; modulation spectra; optical lattices; renormalisation
DOI: 10.1103/PhysRevA.79.041601

Citations: 11
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-12-05
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here

gdpr-image
This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more