Transverse-Field Ising Dynamics in a Rydberg-Dressed Atomic Gas
| Autor: | Shankari Rajagopal, Jacob Hines, Victoria Borish, Ognjen Markovic, Monika Schleier-Smith |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Floquet theory Quantum Physics Phase transition Field (physics) FOS: Physical sciences General Physics and Astronomy 01 natural sciences Resonance (particle physics) symbols.namesake Quantum Gases (cond-mat.quant-gas) 0103 physical sciences Rydberg formula symbols Ising model Physics::Atomic Physics Atomic physics Quantum Physics (quant-ph) Condensed Matter - Quantum Gases 010306 general physics Spin (physics) Quantum |
| Zdroj: | Physical Review Letters. 124 |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | 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 F\"{o}rster 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. Comment: made sign conventions consistent |
| Databáze: | OpenAIRE |
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