Electrically tunable artificial gauge potential for polaritons
arXiv:1610.07358 · doi:10.1038/ncomms14540
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 tuneable artificial gauge potential for two-dimensional microcavity exciton polaritons. For verification, we perform interferometric measurement 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.
12 pages, 3 figures. Supplementary information
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Cited by in corpus (8)
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- Accelerating Polaritons with External Electric and Magnetic Fields
- Observation of Exciton Polariton Condensation in a Perovskite Lattice at Room Temperature
- Polariton spin jets through optical control
- Microcavity polaritons for topological photonics
- A polariton electric field sensor
- Giant synthetic gauge field for spinless microcavity polaritons in crossed electric and magnetic fields
- Eigenvalues bifurcating from the continuum in two-dimensional potentials generating non-Hermitian gauge fields