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Electrically tunable artificial gauge potential for polaritons

Author

Listed:
  • Hyang-Tag Lim

    (Institute of Quantum Electronics, ETH Zurich)

  • Emre Togan

    (Institute of Quantum Electronics, ETH Zurich)

  • Martin Kroner

    (Institute of Quantum Electronics, ETH Zurich)

  • Javier Miguel-Sanchez

    (Institute of Quantum Electronics, ETH Zurich)

  • Atac Imamoğlu

    (Institute of Quantum Electronics, ETH Zurich)

Abstract

Neutral particles subject to artificial gauge potentials can behave as charged particles in magnetic fields. This fascinating premise has led to demonstrations of one-way waveguides, topologically protected edge states and Landau levels for photons. In ultracold neutral atoms, effective gauge fields have allowed the emulation of matter under strong magnetic fields leading to realization of Harper-Hofstadter and Haldane models. Here we show that application of perpendicular electric and magnetic fields effects a tunable artificial gauge potential for two-dimensional microcavity exciton polaritons. For verification, we perform interferometric measurements of the associated phase accumulated during coherent polariton transport. Since the gauge potential originates from the magnetoelectric Stark effect, it can be realized for photons strongly coupled to excitations in any polarizable medium. Together with strong polariton–polariton interactions and engineered polariton lattices, artificial gauge fields could play a key role in investigation of non-equilibrium dynamics of strongly correlated photons.

Suggested Citation

  • Hyang-Tag Lim & Emre Togan & Martin Kroner & Javier Miguel-Sanchez & Atac Imamoğlu, 2017. "Electrically tunable artificial gauge potential for polaritons," Nature Communications, Nature, vol. 8(1), pages 1-6, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14540
    DOI: 10.1038/ncomms14540
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