Fourier synthesis of optical potentials for atomic quantum gases

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We demonstrate a scheme for the Fourier synthesis of periodic optical potentials with asymmetric unit cells for atoms. In a proof of principle experiment, an atomic Bose-Einstein condensate is exposed to either symmetric or sawtooth-like asymmetric potentials by superimposing a conventional standing wave potential of $λ/2$ spatial periodicity with a fourth-order lattice potential of $λ/4$ periodicity. The high periodicity lattice is realized using dispersive properties of multiphoton Raman transitions. Future applications of the demonstrated scheme could range from the search for novel quantum phases in unconventionally shaped lattice potentials up to dissipationless atomic quantum ratchets.
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Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/128825

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0512018
 http://arxiv.org/abs/cond-mat/0512018
 Phys. Rev. A 74, 063622 (2006)
 doi:10.1103/PhysRevA.74.063622

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