Topological Nature of Optical Bound States in the Continuum
Journal Article
·
· Physical Review Letters
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics; Harvard Univ., Cambridge, MA (United States). Dept. of Physics
- Yale Univ., New Haven, CT (United States). Dept. of Applied Physics
Optical bound states in the continuum (BICs) have recently been realized in photonic crystal slabs, where the disappearance of out-of-plane radiation turns leaky resonances into guided modes with infinite lifetimes. We show here that such BICs are vortex centers in the polarization directions of far-field radiation. They carry conserved and quantized topological charges, defined by the winding number of the polarization vectors, which ensure their robust existence and govern their generation, evolution, and annihilation. Our findings connect robust BICs in photonics to a wide range of topological physical phenomena.
- Research Organization:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Yale Univ., New Haven, CT (United States); Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); US Army Research Office (ARO); National Science Foundation (NSF)
- Grant/Contract Number:
- SC0001299; FG02-09ER46577; W911NF-07-D0001; DMR-0819762; DMR-1307632
- OSTI ID:
- 1210642
- Alternate ID(s):
- OSTI ID: 1181579
- Journal Information:
- Physical Review Letters, Vol. 113, Issue 25; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 484 works
Citation information provided by
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