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Exploring Correlated 1D Bose Gases from the Superfluid to the Mott-Insulator State by Inelastic Light Scattering

D. Clément, N. Fabbri, L. Fallani, C. Fort, and M. Inguscio
Phys. Rev. Lett. 102, 155301 – Published 13 April 2009
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Abstract

We report the Bragg spectroscopy of interacting one-dimensional Bose gases loaded in an optical lattice across the superfluid to the Mott-insulator phase transition. Elementary excitations are created with a nonzero momentum and the response of the correlated 1D gases is in the linear regime. The complexity of the strongly correlated quantum phases is directly displayed in the spectra which exhibit novel features. This work paves the way for a precise characterization of the state of correlated gases in optical lattices.

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  • Received 23 December 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.155301

©2009 American Physical Society

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A stimulated atomic response

Published 13 April 2009

Inelastic light scattering is used to study correlated phases of one-dimensional Bose gases. This spectroscopic technique can distinguish superfluid and insulating phases and allow identification of the transition from one to the other.

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Authors & Affiliations

D. Clément*, N. Fabbri, L. Fallani, C. Fort, and M. Inguscio

  • LENS, Dipartimento di Fisica, Università di Firenze and INFM-CNR, via Nello Carrara 1, I-50019 Sesto Fiorentino (FI), Italy

  • *clement@lens.unifi.it

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Issue

Vol. 102, Iss. 15 — 17 April 2009

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