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Bragg Scattering as a Probe of Atomic Wavefunctions and Quantum Phase
Transitions in Optical Lattices
release_awgsyxbqw5euzmopxu2hdr6fa4
by
Hirokazu Miyake,
Georgios A. Siviloglou,
Graciana Puentes,
David E.
Pritchard,
Wolfgang Ketterle,
David M. Weld
Released
as a article
.
2011
Abstract
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 wavefunction whose
position and momentum width is Heisenberg-limited. The spatial coherence of the
wavefunction 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.
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1108.5408v2
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