Spatial quantum noise interferometry in expanding ultracold atom clouds

Author

Fölling, Simon ; Gerbier, Fabrice ; Widera, Artur ; Mandel, Olaf ; Gericke, Tatjana ; Bloch, Immanuel

Author_Institution

Institut fur Physik, Johannes Gutenberg-Universitat, Mainz, Germany

fYear

2005

fDate

12-17 June 2005

Firstpage

232

Abstract

The paper reports on measurement on a Mott insulator released from an optical lattice trap. We show that strong periodic quantum correlations exist at the atomic shot noise level between density fluctuations in the expanding atom cloud, reflecting the underlying spatial ordering in the lattice. These spatial correlations find a natural interpretation in terms of a multiple wave HBT interference effect, and provide a unique tool to identify novel quantum phases of ultracold bosonic or fermionic atoms.

Keywords

atom optics; atom-photon collisions; laser cooling; localised states; quantum noise; radiation pressure; shot noise; HBT interference effect; Mott insulator; density fluctuations; optical lattice trap; periodic quantum correlations; quantum phases; spatial quantum noise interferometry; ultracold bosonic atom; ultracold fermionic atom; Atomic measurements; Charge carrier processes; Clouds; Fluctuations; Heterojunction bipolar transistors; Insulation; Lattices; Noise level; Optical interferometry; Optical noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference, 2005. EQEC '05. European

Print_ISBN

0-7803-8973-5

Type

conf

DOI

10.1109/EQEC.2005.1567398

Filename

1567398