Physics – Condensed Matter – Quantum Gases
Scientific paper
2011-08-27
Phys. Rev. Lett. 107, 175302 (2011)
Physics
Condensed Matter
Quantum Gases
5 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.107.175302
We have observed Bragg scattering of photons from quantum degenerate $^{87}$Rb 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.
Ketterle Wolfgang
Miyake Hirokazu
Pritchard David E.
Puentes Graciana
Siviloglou Georgios A.
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