Electrically tunable artificial gauge potential for polaritons
| Autor: | Emre Togan, Atac Imamoglu, Hyang-Tag Lim, Javier Miguel-Sánchez, Martin Kroner |
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| Rok vydání: | 2017 |
| Předmět: |
Photon
High Energy Physics::Lattice Science General Physics and Astronomy FOS: Physical sciences Physics::Optics 02 engineering and technology Exciton-polaritons 01 natural sciences Article General Biochemistry Genetics and Molecular Biology symbols.namesake 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Polariton 010306 general physics Physics Condensed Matter::Quantum Gases Quantum Physics Multidisciplinary Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics business.industry Condensed Matter::Other General Chemistry Landau quantization Gauge (firearms) 021001 nanoscience & nanotechnology Charged particle Magnetic field Stark effect symbols Optoelectronics 0210 nano-technology business Quantum Physics (quant-ph) |
| Zdroj: | Nature Communications Nature Communications, 8 Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017) |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/ncomms14540 |
| Popis: | 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. Nature Communications, 8 ISSN:2041-1723 |
| Databáze: | OpenAIRE |
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