Quantum melting of two-component Rydberg crystals

Lan, Zhihao and Li, Weibin and Lesanovsky, Igor (2016) Quantum melting of two-component Rydberg crystals. Physical Review A, 94 . 051603/1-051603/6. ISSN 2469-9934

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Abstract

We investigate the quantum melting of one-dimensional crystals that are realized in an atomic lattice in which ground state atoms are laser excited to two Rydberg states. We focus on a regime where both, intra- and interstate density-density interactions as well as coherent exchange interactions contribute. We determine stable crystalline phases in the classical limit and explore their melting under quantum fluctuations introduced by the excitation laser as well as two-body exchange. We find that within a specific parameter range quantum fluctuations introduced by the laser can give rise to a devil’s staircase structure which one might associate with transitions in the classical limit. The melting through exchange interactions is shown to also proceed in a steplike fashion, in the case of small crystals, due to the proliferation of Rydberg spin waves.

Item Type: Article
Additional Information: ©2016 American Physical Society
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1103/PhysRevA.94.051603
Depositing User: Lan, Zhihao
Date Deposited: 14 Nov 2016 14:34
Last Modified: 12 Oct 2017 21:50
URI: http://eprints.nottingham.ac.uk/id/eprint/38691

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