Bragg scattering as a probe of atomic wave functions and quantum phase transitions in optical lattices
Author(s)Miyake, Hirokazu; Puentes, Graciana; Pritchard, David E.; Ketterle, Wolfgang; Weld, David M.; Siviloglou, Georgios A.; ... Show more Show less
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We have observed Bragg scattering of photons from quantum degenerate 87Rb atoms in a three-dimensional optical lattice. Bragg scattered light directly probes the microscopic crystal structure and atomic wave function whose position and momentum width is Heisenberg limited. The spatial coherence of the wave function leads to revivals in the Bragg scattered light due to the atomic Talbot effect. The decay of revivals across the superfluid to Mott insulator transition indicates the loss of superfluid coherence.
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold Atoms
Physical Review Letters
American Physical Society
Miyake, Hirokazu et al. "Bragg Scattering as a Probe of Atomic Wave Functions and Quantum Phase Transitions in Optical Lattices." Physical Review Letters 107, 175302 (2011) [5 pages]. © 2011 American Physical Society.
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