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DOE OSTI · 1803602

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

Borish, V.·Marković, O.·Hines, J. A.·Rajagopal, S. V.
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Abstract

Here, 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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74 ATOMIC AND MOLECULAR PHYSICSPhysics

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Borish, V., Marković, O., Hines, J. A., Rajagopal, S. V.. 2020-02-11. Transverse-Field Ising Dynamics in a Rydberg-Dressed Atomic Gas. https://doi.org/10.1103/physrevlett.124.063601

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