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Article Dans Une Revue Physical Review Letters Année : 2011

Laser Controlled Tunneling in a Vertical Optical Lattice

Résumé

Raman laser pulses are used to induce coherent tunneling between neighboring sites of a vertical 1D optical lattice. Such tunneling occurs when the detuning of a probe laser from the atomic transition frequency matches multiples of the Bloch frequency, allowing for a spectroscopic control of the coupling between Wannier-Stark (WS) states. In particular, we prepare coherent superpositions of WS states of adjacent sites, and investigate the coherence time of these superpositions by realizing a spatial interferometer. This scheme provides a powerful tool for coherent manipulation of external degrees of freedom of cold atoms, which is a key issue for quantum information processing.
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hal-03742828 , version 1 (11-05-2023)

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Quentin Beaufils, Gunnar Tackmann, X. Wang, Bruno Pelle, Sophie Pelisson, et al.. Laser Controlled Tunneling in a Vertical Optical Lattice. Physical Review Letters, 2011, 106, pp.213002. ⟨10.1103/PhysRevLett.106.213002⟩. ⟨hal-03742828⟩
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