Nonreciprocal lasing in topological cavities of arbitrary geometries
Top Cited Papers
- 3 November 2017
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 358 (6363), 636-640
- https://doi.org/10.1126/science.aao4551
Abstract
Resonant cavities are essential building blocks governing many wave-based phenomena, but their geometry and reciprocity fundamentally limit the integration of optical devices. We report, at telecommunication wavelengths, geometry-independent and integrated nonreciprocal topological cavities that couple stimulated emission from one-way photonic edge states to a selected waveguide output with an isolation ratio in excess of 10 decibels. Nonreciprocity originates from unidirectional edge states at the boundary between photonic structures with distinct topological invariants. Our experimental demonstration of lasing from topological cavities provides the opportunity to develop complex topological circuitry of arbitrary geometries for the integrated and robust generation and transport of photons in classical and quantum regimes.Keywords
Funding Information
- National Science Foundation (award340704, ECCS-1554021)
- Office of Naval Research (award340703, N00014-13-1-0678)
- Office of Naval Research (award352700, N00014-17-1-2671)
- U.S. Department of Energy (award352699, EE0007341)
- Semiconductor Research Corporation (award352305, CCF-1640227)
- Army Research Office (award352303, W911NF-16-1-0245)
- NSF (award352301, ECCS-1405234)
- NSF (award352302, ECCS-1507146)
- NSF (award352304, ECCS-1644647)
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