Room-temperature on-chip orbital angular momentum single-photon sources
- URL: http://arxiv.org/abs/2104.01118v1
- Date: Fri, 2 Apr 2021 15:57:34 GMT
- Title: Room-temperature on-chip orbital angular momentum single-photon sources
- Authors: Cuo Wu, Shailesh Kumar, Yinhui Kan, Danylo Komisar, Zhiming Wang,
Sergey I. Bozhevolnyi, and Fei Ding
- Abstract summary: On-chip sources carrying orbital angular momentum (OAM) are in demand for high-capacity optical information processing.
We demonstrate a room-temperature on-chip integrated OAM source that emits well-collimated single photons.
Our OAM single-photon sources bridge the gap between conventional OAM manipulation and nonclassical light sources.
- Score: 2.6929576641257778
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: On-chip photon sources carrying orbital angular momentum (OAM) are in demand
for high-capacity optical information processing in both classical and quantum
regimes. However, currently-exploited integrated OAM sources have been
primarily limited to the classical regime. Herein, we demonstrate a
room-temperature on-chip integrated OAM source that emits well-collimated
single photons, with a single-photon purity of g(2)(0) = 0.22, carrying
entangled spin and orbital angular momentum states and forming two spatially
separated entangled radiation channels with different polarization properties.
The OAM-encoded single photons are generated by efficiently outcoupling
diverging surface plasmon polaritons excited with a deterministically
positioned quantum emitter via Archimedean spiral gratings. Our OAM
single-photon sources bridge the gap between conventional OAM manipulation and
nonclassical light sources, enabling high-dimensional and large-scale photonic
quantum systems for information processing.
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