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Article Dans Une Revue Physical Review Letters Année : 2008

Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases

Résumé

We report on the observation of the phase dynamics of interacting one-dimensional ultracold bosonic gases with two internal degrees of freedom. By controlling the non-linear atomic interactions close to a Feshbach resonance we are able to induce a phase diffusive many-body spin dynamics. We monitor this dynamical evolution by Ramsey interferometry, supplemented by a novel, many-body echo technique. We find that the time evolution of the system is well described by a Luttinger liquid initially prepared in a multimode squeezed state. Our approach allows us to probe the non-equilibrium evolution of one-dimensional many-body quantum systems.

Dates et versions

hal-00311421 , version 1 (15-08-2008)

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Artur Widera, Stefan Trotzky, Patrick Cheinet, Simon Fölling, Fabrice Gerbier, et al.. Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases. Physical Review Letters, 2008, 100, pp.140401. ⟨10.1103/PhysRevLett.100.140401⟩. ⟨hal-00311421⟩
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