Title :
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
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;
Conference_Titel :
Quantum Electronics Conference, 2005. EQEC '05. European
Print_ISBN :
0-7803-8973-5
DOI :
10.1109/EQEC.2005.1567398
