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Q: Fachverband Quantenoptik und Photonik
Q 57: Ultra-cold Plasmas and Rydberg Systems I (joint session A/Q)
Q 57.3: Vortrag
Donnerstag, 13. März 2025, 11:45–12:00, HS PC
Resonant stroboscopic Rydberg dressing: electron-motion coupling and multi-body interactions — •Chris Nill1,2, Sylvain de Léséleuc3,4, Christian Groß5, and Igor Lesanovsky1 — 1Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany — 2Institute for Applied Physics, University of Bonn, Wegelerstraße 8, 53115 Bonn, Germany — 3Institute for Molecular Science, National Institutes of Natural Sciences, 444-8585 Okazaki, Japan — 4RIKEN Center for Quantum Computing (RQC), 351-0198 Wako, Japan — 5Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
Rydberg dressing traditionally refers to a technique where interactions between cold atoms are imprinted through the far off-resonant continuous-wave excitation of high-lying Rydberg states. Dipolar interactions between these electronic states are then translated into effective interactions among ground state atoms. Motivated by recent experiments, we investigate two dressing protocols, in which Rydberg atoms are resonantly excited in a stroboscopic fashion [1]. The first one is non-adiabatic, meaning Rydberg states are excited by fast pulses. In this case, mechanical forces among Rydberg atoms result in electron-motion coupling, which generates effective multi-body interactions. In the second, adiabatic protocol, Rydberg states are excited by smoothly varying laser pulses. We show that also in this protocol, substantial multi-body interactions emerge.
[1] C. Nill et al., arXiv:2411.10090 (2024).
Keywords: Rydberg atoms; stroboscopic dressing; spin-motion coupling; multi-body interactions; Floquet engineering