Quantum Hall phases emerging from atom–photon interactions
| Autor: | Chaohong Lee, Yongguan Ke, N. A. Olekhno, Yuri S. Kivshar, Alexander N. Poddubny, Alexander V. Poshakinskiy, Janet Zhong |
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| Rok vydání: | 2021 |
| Předmět: |
Quantum optics
Physics Photon Computer Networks and Communications QC1-999 Quantum simulator Statistical and Nonlinear Physics QA75.5-76.95 Landau quantization Quantum Hall effect Magnetic field Computational Theory and Mathematics Electronic computers. Computer science Quantum mechanics Qubit Computer Science (miscellaneous) Topological order |
| Zdroj: | npj Quantum Information, Vol 7, Iss 1, Pp 1-8 (2021) |
| ISSN: | 2056-6387 |
| DOI: | 10.1038/s41534-021-00372-8 |
| Popis: | We reveal the emergence of quantum Hall phases, topological edge states, spectral Landau levels, and Hofstadter butterfly spectra in the two-particle Hilbert space of an array of periodically spaced two-level atoms coupled to a waveguide (waveguide quantum electrodynamics). While the topological edge states of photons require fine-tuned spatial or temporal modulations of the parameters to generate synthetic magnetic fields and the quantum Hall effect, here we demonstrate that a synthetic magnetic field can be self-induced solely by atom–photon interactions. The fact that topological order can be self-induced in what is arguably the simplest possible quantum structure shows the richness of these waveguide quantum electrodynamics systems. We believe that our findings will advance several research disciplines including quantum optics, many-body physics, and nonlinear topological photonics, and that it will set an important reference point for the future experiments on qubit arrays and quantum simulators. |
| Databáze: | OpenAIRE |
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