Noise correlation spectroscopy of the broken order of a Mott Insulating phase

Year: 2008

Authors: Guarrera V., Fabbri N., Fallani L., Fort C., van der Stam K. M. R., Inguscio M.

Autors Affiliation: LENS European Laboratory for Nonlinear Spectroscopy e Dipartimento di Fisica, Università di Firenze

Abstract: We use a two-color lattice to break the homogeneous site occupation of an atomic Mott insulator of bosonic 87Rb.We detect the disruption of the ordered Mott domains via noise correlation analysis of the atomic density distribution after time of flight. The appearance of additional correlation peaks evidences the redistribution of the atoms into a strongly inhomogeneous insulating state, in quantitative agreement with the predictions.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 100 (25)      Pages from: 250403-1  to: 250403-4

KeyWords: Atoms, Atomic density distribution; Correlation peaks; Insulating state; Mott-insulating phase; Noise correlation; Quantitative agreement; Site occupation; Time of flight, Mott insulators
DOI: 10.1103/PhysRevLett.100.250403

Citations: 42
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