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Designing exotic many-body states of atomic spin and motion in photonic crystals

Author

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  • Marco T. Manzoni

    (ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology)

  • Ludwig Mathey

    (Zentrum für Optische Quantentechnologien and Institut für Laserphysik, Universität Hamburg
    The Hamburg Centre for Ultrafast Imaging)

  • Darrick E. Chang

    (ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology)

Abstract

Cold atoms coupled to photonic crystals constitute an exciting platform for exploring quantum many-body physics. For example, such systems offer the potential to realize strong photon-mediated forces between atoms, which depend on the atomic internal (spin) states, and where both the motional and spin degrees of freedom can exhibit long coherence times. An intriguing question then is whether exotic phases could arise, wherein crystalline or other spatial patterns and spin correlations are fundamentally tied together, an effect that is atypical in condensed matter systems. Here, we analyse one realistic model Hamiltonian in detail. We show that this previously unexplored system exhibits a rich phase diagram of emergent orders, including spatially dimerized spin-entangled pairs, a fluid of composite particles comprised of joint spin-phonon excitations, phonon-induced Néel ordering, and a fractional magnetization plateau associated with trimer formation.

Suggested Citation

  • Marco T. Manzoni & Ludwig Mathey & Darrick E. Chang, 2017. "Designing exotic many-body states of atomic spin and motion in photonic crystals," Nature Communications, Nature, vol. 8(1), pages 1-9, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14696
    DOI: 10.1038/ncomms14696
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