Journal
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
Volume 59, Issue 4, Pages 2947-2952Publisher
KOREAN PHYSICAL SOC
DOI: 10.3938/jkps.59.2947
Keywords
Optical lattices; Cold atoms; Quantum transport
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We have directly observed spin-dependent transport of single cesium atoms in a 1D optical lattice. A superposition of two circularly polarized standing waves is generated from two counter propagating, linearly-polarized laser beams. Rotation of one of the polarizations by pi causes displacement of the sigma(+) and the sigma(-)-lattices by one lattice site. Unidirectional transport over several lattice sites is achieved by rotating the polarization back and forth and flipping the spin after each transport step. We have analyzed the transport efficiency over 10 and more lattice sites, and we discuss and quantify the relevant error sources.
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