Quantum-state control in optical lattices

Details Quantum-state control in optical lattices Quantum-state control in optical lattices

1998-01-13

arxiv.org/abs/quant-ph/9801023v1

Physics

Quantum Physics

35 pages including 8 figures. To appear in Phys. Rev. A. March 1998

Scientific paper

10.1103/PhysRevA.57.1972

We study the means to prepare and coherently manipulate atomic wave packets in optical lattices, with particular emphasis on alkali atoms in the far-detuned limit. We derive a general, basis independent expression for the lattice operator, and show that its off-diagonal elements can be tailored to couple the vibrational manifolds of separate magnetic sublevels. Using these couplings one can evolve the state of a trapped atom in a quantum coherent fashion, and prepare pure quantum states by resolved-sideband Raman cooling. We explore the use of atoms bound in optical lattices to study quantum tunneling and the generation of macroscopic superposition states in a double-well potential. Far-off-resonance optical potentials lend themselves particularly well to reservoir engineering via well controlled fluctuations in the potential, making the atom/lattice system attractive for the study of decoherence and the connection between classical and quantum physics.

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