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arXiv · 0709.2094

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

Artur Widera·Stefan Trotzky·Patrick Cheinet·Simon Fölling·Fabrice Gerbier·Immanuel Bloch·Vladimir Gritsev·Mikhail D. Lukin·Eugene Demler
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Abstract

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.

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Artur Widera, Stefan Trotzky, Patrick Cheinet, Simon Fölling, Fabrice Gerbier, Immanuel Bloch, Vladimir Gritsev, Mikhail D. Lukin, Eugene Demler. 2008-04-18. Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases. https://doi.org/10.1103/physrevlett.100.140401

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