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Quantum melting of two-component Rydberg crystals

Lan, Zhihao; Li, Weibin; Lesanovsky, Igor

Authors

Zhihao Lan Zhihao.Lan@nottingham.ac.uk

WEIBIN LI weibin.li@nottingham.ac.uk
Associate Professor



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.

Journal Article Type Article
Publication Date Nov 11, 2016
Journal Physical Review A
Print ISSN 2469-9926
Electronic ISSN 2469-9934
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 94
Article Number 051603
APA6 Citation Lan, Z., Li, W., & Lesanovsky, I. (2016). Quantum melting of two-component Rydberg crystals. Physical Review A, 94, https://doi.org/10.1103/PhysRevA.94.051603
DOI https://doi.org/10.1103/PhysRevA.94.051603
Publisher URL http://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.051603
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information ©2016 American Physical Society

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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