Vibrational Dressing in Kinetically Constrained Rydberg Spin Systems.,Physical Review Letters

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Vibrational Dressing in Kinetically Constrained Rydberg Spin Systems.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-07-14 , DOI: 10.1103/physrevlett.125.033602
Paolo P Mazza ₁ , Richard Schmidt _{2,

3} , Igor Lesanovsky _{1,

4}

Affiliation

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.

中文翻译：

受动力学约束的里德堡纺丝系统中的振动修整。

具有动力学约束的量子自旋系统已成为探索多体系统中集体动力学行为的范例。在这里，我们讨论一种便利的自旋系统，该系统受Rydberg量子模拟器实现中的最新进展启发。该平台允许控制和研究促进动力学与自旋自由度与晶格振动的耦合之间的相互作用。开发一个最小模型，我们表明这导致极化子准粒子激发的形成，它是由声子穿戴的多体自旋态形成的。我们将详细研究这些准粒子的性质，例如它们的分散关系，有效质量和准粒子重量。

更新日期：2020-07-14

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