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Thomas Pohl

Fractional quantum Hall states of Rydberg polaritons

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  • Mohammad F. Maghrebi, University of Maryland, College Park
  • ,
  • Norman Y. Yao, Univ Calif Irvine, University of California Irvine, University of California System, Dept Phys & Astron
  • ,
  • Mohammad Hafezi, University of Maryland, College Park
  • ,
  • Thomas Pohl
  • Ofer Firstenberg, Weizmann Institute of Science
  • ,
  • Alexey V. Gorshkov, University of Maryland, College Park

We propose a scheme for realizing fractional quantum Hall states of light. In our scheme, photons of two polarizations are coupled to different atomic Rydberg states to form two flavors of Rydberg polaritons that behave as an effective spin. An array of optical cavity modes overlapping with the atomic cloud enables the realization of an effective spin-1/2 lattice. We show that the dipolar interaction between such polaritons, inherited from the Rydberg states, can be exploited to create a flat, topological band for a single spin-flip excitation. At half filling, this gives rise to a photonic (or polaritonic) fractional Chern insulator-a lattice-based, fractional quantum Hall state of light.

Original languageEnglish
Article number033838
JournalPhysical Review A
Volume91
Issue3
Number of pages8
ISSN2469-9926
DOIs
Publication statusPublished - 31 Mar 2015
Externally publishedYes

    Research areas

  • ELECTROMAGNETICALLY INDUCED TRANSPARENCY, SUPERCONDUCTING CIRCUITS, TRAPPED ATOM, SPIN LIQUID, PHOTON, GAS, EXCITATIONS, INFORMATION, CAVITY

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