Vibrational dressing in kinetically constrained Rydberg spin systems

Mazza, Paolo P.; Schmidt, Richard; Lesanovsky, Igor

Abstract

Quantum spin systems with kinetic constraints have become paradigmatic for exploring collective dynamical behavior in many-body systems. Here we discuss a facilitated spin system which is inspired by recent progress in the realization of Rydberg quantum simulators. This platform allows to control and investigate the interplay between facilitation dynamics and the coupling of spin degrees of freedom to lattice vibrations. Developing a minimal model, we show that this leads to the formation of polaronic quasiparticle excitations which are formed by many-body spin states dressed by phonons. We investigate in detail the properties of these quasiparticles, such as their dispersion relation, effective mass, and the quasiparticle weight. Rydberg lattice quantum simulators are particularly suited for studying this phonon-dressed kinetically constrained dynamics as their exaggerated length scales permit the site-resolved monitoring of spin and phonon degrees of freedom.

Citation

Mazza, P. P., Schmidt, R., & Lesanovsky, I. (2020). Vibrational dressing in kinetically constrained Rydberg spin systems. Physical Review Letters, 125(3), Article 033602. https://doi.org/10.1103/PhysRevLett.125.033602

• Journal Article Type: Letter
• Acceptance Date: Jun 29, 2020
• Online Publication Date: Jul 14, 2020
• Publication Date: Jul 14, 2020
• Deposit Date: Jun 29, 2020
• Publicly Available Date: Jul 14, 2020
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 125
• Issue: 3
• Article Number: 033602
• DOI: https://doi.org/10.1103/PhysRevLett.125.033602
• Public URL: https://nottingham-repository.worktribe.com/output/4738935
• Publisher URL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.033602