Vibrational Dressing in Kinetically Constrained Rydberg Spin Systems

Paolo P. Mazza, Richard Schmidt, and Igor Lesanovsky
Phys. Rev. Lett. 125, 033602 – Published 14 July 2020
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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.

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  • Received 16 March 2020
  • Accepted 29 June 2020

DOI:https://doi.org/10.1103/PhysRevLett.125.033602

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Paolo P. Mazza1, Richard Schmidt2,3, and Igor Lesanovsky1,4

  • 1Institut für Theoretische Physik, University of Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
  • 2Max-Planck-Institute of Quantum Optics, Hans-Kopfermann-Strasse, 1, 85748 Garching, Germany
  • 3Munich Center for Quantum Science and Technology (MCQST), Schellingstr. 4, 80799 München, Germany
  • 4School of Physics and Astronomy and Centre for the Mathematics and Theoretical Physics of Quantum Non-Equilibrium Systems, University of Nottingham, Nottingham NG7 2RD, United Kingdom

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Issue

Vol. 125, Iss. 3 — 17 July 2020

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