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arXiv · 1910.13687

Transverse-Field Ising Dynamics in a Rydberg-Dressed Atomic Gas

Victoria Borish·Ognjen Marković·Jacob A. Hines·Shankari V. Rajagopal·Monika Schleier-Smith
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Abstract

We report on the realization of long-range Ising interactions in a cold gas of cesium atoms by Rydberg dressing. The interactions are enhanced by coupling to Rydberg states in the vicinity of a Förster resonance. We characterize the interactions by measuring the mean-field shift of the clock transition via Ramsey spectroscopy, observing one-axis twisting dynamics. We furthermore emulate a transverse-field Ising model by periodic application of a microwave field and detect dynamical signatures of the paramagnetic-ferromagnetic phase transition. Our results highlight the power of optical addressing for achieving local and dynamical control of interactions, enabling prospects ranging from investigating Floquet quantum criticality to producing tunable-range spin squeezing.

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Victoria Borish, Ognjen Marković, Jacob A. Hines, Shankari V. Rajagopal, Monika Schleier-Smith. 2020-02-18. Transverse-Field Ising Dynamics in a Rydberg-Dressed Atomic Gas. https://doi.org/10.1103/physrevlett.124.063601

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