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Science. 2018 Feb 9;359(6376):666-668. doi: 10.1126/science.aaq0327.

A topological quantum optics interface.

Author information

1
Department of Physics, University of Maryland, College Park, MD 20742, USA.
2
Joint Quantum Institute, University of Maryland, College Park, MD 20742, USA.
3
Department of Electrical and Computer Engineering and Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA.
4
Department of Physics, University of Maryland, College Park, MD 20742, USA. hafezi@umd.edu edowaks@umd.edu.

Abstract

The application of topology in optics has led to a new paradigm in developing photonic devices with robust properties against disorder. Although considerable progress on topological phenomena has been achieved in the classical domain, the realization of strong light-matter coupling in the quantum domain remains unexplored. We demonstrate a strong interface between single quantum emitters and topological photonic states. Our approach creates robust counterpropagating edge states at the boundary of two distinct topological photonic crystals. We demonstrate the chiral emission of a quantum emitter into these modes and establish their robustness against sharp bends. This approach may enable the development of quantum optics devices with built-in protection, with potential applications in quantum simulation and sensing.

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PMID:
29439239
DOI:
10.1126/science.aaq0327

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