Year: 2021
Type: article
Abstract: A primary motivation for studying topological matter regards the protection of topological order from its environment. In this work, we study a topological emitter array coupled to an electromagnetic environment. The photon-emitter coupling produces nonlocal interactions between emitters. Using periodic boundary conditions for all ranges of environment-induced interactions, the chiral symmetry inherent to the emitter array is preserved. This chiral symmetry protects the Hamiltonian and induces parity in the Lindblad operator. A topological phase transition occurs at a critical photon-emitter coupling related to the energy spectrum width of the emitter array. Interestingly, the critical point nontrivially changes the dissipation rates of edge states, yielding a dissipative topological phase transition. In the protected topological phase, edge states suffer from environment-induced dissipation for weak photon-emitter coupling. However, strong coupling leads to robust dissipationless edge states with a window at the emitter spacing. Our work shows the potential to manipulate topological quantum matter with electromagnetic environments.
Source: Physical Review Letters
Authors: Wei Nie, Mauro Antezza, Yu-xi Liu, Franco Nori
Institutions: RIKEN, Centre National de la Recherche Scientifique, Institut Universitaire de France, Université de Montpellier, Laboratoire Charles Coulomb, Frontier Science Center for Quantum Information of the Ministry of Education of China, Tsinghua University, University of Michigan, RIKEN Center for Quantum Computing
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Foundational Questions Institute, Asian Office of Aerospace Research and Development, National Natural Science Foundation of China, Russian Foundation for Basic Research, Nippon Telegraph and Telephone, Japan Society for the Promotion of Science, Japan Science and Technology Agency, National Key Research and Development Program of China, Core Research for Evolutional Science and Technology, Moonshot Research and Development Program, Army Research Office
Awards: G1064757669, G1429566569, G2051610214, G2441868293, G2490340067, G2521286739, G2710192643, G3090458625, G3512592488, G3985038618, Quantum optics in quantum hybrid systems, G4562773702, G5473779960, G5620609039, 誤り耐性型量子コンピュータにおける理論・ソフトウェアの研究開発, G6297370357, G6483027378, G6718509927, 基于波导QED的微波量子态传输与操控理论研究, G7452299184, G7904985311, G8087700694, 超伝導人工原子を使った光子ベースの量子情報処理, G8883783173, G962039800
OpenAlex ID: W3141952913