Journal
LASER & PHOTONICS REVIEWS
Volume 15, Issue 9, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.202100009
Keywords
chiral photonic circuits; quantum dots; spin-photon interfaces
Categories
Funding
- National Natural Science Foundation of China [62025507, 11934019, 11721404, 11874419]
- Key-Area Research and Development Program of Guangdong Province [2018B030329001]
- Strategic Priority Research Program [XDB28000000]
- Instrument Developing Project [YJKYYQ20180036]
- Interdisciplinary Innovation Team of the Chinese Academy of Science
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Chiral quantum optics has attracted interest in the field of quantum information science. By exploiting spin-polarization properties and engineering rational photonic nanostructures, information can be transformed in compact chiral photonic circuits with deterministic circularly polarized chiral routing and beamsplitting.
Chiral quantum optics has attracted considerable interest in the field of quantum information science. Exploiting the spin-polarization properties of quantum emitters and engineering rational photonic nanostructures has made it possible to transform information from spin to path encoding. Here, compact chiral photonic circuits with deterministic circularly polarized chiral routing and beamsplitting are demonstrated using two laterally adjacent waveguides coupled with quantum dots. Chiral routing arises from the electromagnetic field chirality in waveguide, and beamsplitting is obtained via the evanescent field coupling. The spin- and position-dependent directional spontaneous emission are achieved by spatially selective micro-photoluminescence measurements, with a chiral contrast of up to 0.84 in the chiral photonic circuits. This makes a significant advancement for broadening the application scenarios of chiral quantum optics and developing scalable quantum photonic networks.
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