Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Laser & Photonics Review

Room‐Temperature Generation of Heralded Single Photons on Silicon Chip with Switchable Orbital Angular Momentum (Laser Photonics Rev. 16(12)/2022)

Shan Zhang, Xue Feng, Wei Zhang, Kaiyu Cui, Fang Liu, Yidong Huang

Published Dec 1, 2022• 0 citations
Publisher

Abstract

Orbital Angular Momentum In article number 2200388, Shan Zhang, Xue Feng, and colleagues have proposed and demonstrated a heralded single-photon source with switchable orbital angular momentum (OAM) modes on silicon chip. At room-temperature, the heralded single photons are generated through the nonlinear effect and transformed to 11 OAM modes by an OAM emitter, offering a practical platform for high-dimensional quantum information processing.

DOI
10.1002/lpor.202270059

Related papers

Room‐Temperature Generation of Heralded Single Photons on Silicon Chip with Switchable Orbital Angular Momentum

Shan Zhang, Xue Feng, Wei Zhang +3 more

Abstract In quantum optics, orbital angular momentum (OAM) is very promising to achieve high-dimensional quantum states due to the nature of infinite and discrete eigenvalues, which is quantized by the topological charge of l. Here, a heralded single-photon source with switchable OAM modes is proposed and demonstrated on silicon chip. At room-temperature, the heralded single photons with 11 OAM modes (l=2~6, -6~-1) have been successfully generated and switched through thermo-optical effect. We believe that such an integrated quantum source with multiple OAM modes and operating at room-temperature would provide a practical platform for high-dimensional quantum information processing. Moreover, our proposed architecture can also be extended to other material systems to further improve the performance of OAM quantum source.

arXiv:2111.05594•Laser & Photonics Review•Sep 18, 2022•5 citations

Generating heralded single photons with a switchable orbital angular momentum mode

Shan Zhang, Shikang Li, Xue Feng +4 more

The orbital angular momentum (OAM) carried by photons defines an infinitely dimensional discrete Hilbert space. With OAM modes, high-dimensional quantum states can be achieved for quantum communication and cryptography. Here we demonstrate a heralded single-photon source with a switchable OAM mode, which consists of a heralded single-photon source and an integrated OAM emitter as the mode converter. As the first step, the heralded single-photon source is based on the dispersion-shifted fiber. In this work, the OAM mode (quantized by topological charge l ) carried by the heralded single photon (at fixed wavelength of 1555.75 nm) can be switched within the range of l = 3 – 7 while the mode purity is more than 80%.

Photonics Research•Jul 20, 2021•4 citations

Room-temperature on-chip orbital angular momentum single-photon sources

Cuo Wu, Shailesh Kumar, Yinhui Kan +4 more

(0) ≈ 0.22, carrying entangled spin and OAM 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 source platform bridges the gap between conventional OAM manipulation and nonclassical light sources, enabling high-dimensional and large-scale photonic quantum systems for quantum information processing.

arXiv:2104.01118•Science Advances•Jan 12, 2022•118 citations

Integrated High-dimensional Orbital Angular Momentum Entangled Photon Source

Jieshan Huang, Xudong Li, Jingze Yuan +3 more

We experimentally demonstrate the generation of arbitrary entangled 2-photon 5-dimensional orbit angular momentum(OAM) states on a programmable silicon photonic chip. High-dimensional witness and tomography are used to verify the genuine entanglement.

•Jan 1, 2024•0 citations

Multiplexing heralded single photons in orbital-angular-momentum space

Shi-Long Liu, Qiang Zhou, Zhi‐Yuan Zhou +7 more

A heralded single-photon source (HSPS) with competitive single-photon purity and indistinguishability has become an essential resource for photonic quantum information processing. Here we propose a theoretical regime to enhance heralded single-photon generation by multiplexing the degree of freedom of orbital angular momentum (OAM) of down-converted entangled photon pairs emitted from a nonlinear crystal. Experimentally, a proof-of-principle experiment is performed through multiplexing three OAM modes. We achieve a $47%$ enhancement in the single-photon rate. A second-order autocorrelation function ${g}^{(2)}(0)<0.5$ ensures our multiplexed heralded single photons with good single-photon purity. We further indicate that an OAM-multiplexed HSPS with high quality can be constructed by generating higher-dimensional entangled states and sorting them with high efficiency in OAM space. Our method may approach a good HSPS with the deterministic property.

arXiv:1810.03245•Physical Review A•Jul 16, 2019•11 citations

Research progress of integrated quantum light sources with orbital angular momentum

Bo Chen, Jin Liu, Juntao Li +1 more

Quantum light sources are one of key devices for quantum information processing, and they are also the important foundation for applications such as in quantum computing, quantum communication, and quantum simulation. Improving the capacity of quantum information coding by using the quantum light source is a major challenge in the development of quantum information technology. Photons with a helical phase front can carry a discrete, unlimited but quantized amount of orbital angular momentum (OAM). The infinite number of states with different OAMs can greatly increase the capacity of optical communication and information processing in quantum regimes. To date photons carrying OAM have mainly been generated by using bulk crystals, which limits the efficiency and the scalability of the source. With the advancement of quantum photonic technology, many significant quantum photonic devices can now be realized on integrated chips. However, creating high-dimensional OAM quantum states at a micro-nano scale is still a challenge. And the research of harnessing high-dimensional OAM mode by using integrated quantum photonic technologies is still in its infancy. Here, the authors review the recent progress and discuss the integrated quantum light sources with OAM. The authors introduce the research progress of using OAM for both single photons and entangled photons and emphasize the exciting work on pushing boundaries in high-dimensional quantum states. This may pave the way for the research and practical applications of high-dimensional quantum light sources.

Acta Physica Sinica•Jan 1, 2024•0 citations
Orbital Angular Momentum In article number 2200388, Shan Zhang, Xue Feng, and colleagues have proposed and demonstrated a heralded single-photon source with switchable orbital angular momentum (OAM) modes on silicon chip. At room-temperature, the heralded single photons are generated through the nonlinear effect and transformed to 11 OAM modes by an OAM emitter, offering a practical platform for high-dimensional quantum information processing.
Abstract In quantum optics, orbital angular momentum (OAM) is very promising to achieve high-dimensional quantum states due to the nature of infinite and discrete eigenvalues, which is quantized by the topological charge of l. Here, a heralded single-photon source with switchable OAM modes is proposed and demonstrated on silicon chip. At room-temperature, the heralded single photons with 11 OAM modes (l=2~6, -6~-1) have been successfully generated and switched through thermo-optical effect. We believe that such an integrated quantum source with multiple OAM modes and operating at room-temperature would provide a practical platform for high-dimensional quantum information processing. Moreover, our proposed architecture can also be extended to other material systems to further improve the performance of OAM quantum source.
The orbital angular momentum (OAM) carried by photons defines an infinitely dimensional discrete Hilbert space. With OAM modes, high-dimensional quantum states can be achieved for quantum communication and cryptography. Here we demonstrate a heralded single-photon source with a switchable OAM mode, which consists of a heralded single-photon source and an integrated OAM emitter as the mode converter. As the first step, the heralded single-photon source is based on the dispersion-shifted fiber. In this work, the OAM mode (quantized by topological charge l ) carried by the heralded single photon (at fixed wavelength of 1555.75 nm) can be switched within the range of l = 3 – 7 while the mode purity is more than 80%.
(0) ≈ 0.22, carrying entangled spin and OAM 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 source platform bridges the gap between conventional OAM manipulation and nonclassical light sources, enabling high-dimensional and large-scale photonic quantum systems for quantum information processing.
A heralded single-photon source (HSPS) with competitive single-photon purity and indistinguishability has become an essential resource for photonic quantum information processing. Here we propose a theoretical regime to enhance heralded single-photon generation by multiplexing the degree of freedom of orbital angular momentum (OAM) of down-converted entangled photon pairs emitted from a nonlinear crystal. Experimentally, a proof-of-principle experiment is performed through multiplexing three OAM modes. We achieve a 4747%47 enhancement in the single-photon rate. A second-order autocorrelation function g(2)(0)<0.5{g}^{(2)}(0)<0.5g(2)(0)<0.5 ensures our multiplexed heralded single photons with good single-photon purity. We further indicate that an OAM-multiplexed HSPS with high quality can be constructed by generating higher-dimensional entangled states and sorting them with high efficiency in OAM space. Our method may approach a good HSPS with the deterministic property.
Quantum light sources are one of key devices for quantum information processing, and they are also the important foundation for applications such as in quantum computing, quantum communication, and quantum simulation. Improving the capacity of quantum information coding by using the quantum light source is a major challenge in the development of quantum information technology. Photons with a helical phase front can carry a discrete, unlimited but quantized amount of orbital angular momentum (OAM). The infinite number of states with different OAMs can greatly increase the capacity of optical communication and information processing in quantum regimes. To date photons carrying OAM have mainly been generated by using bulk crystals, which limits the efficiency and the scalability of the source. With the advancement of quantum photonic technology, many significant quantum photonic devices can now be realized on integrated chips. However, creating high-dimensional OAM quantum states at a micro-nano scale is still a challenge. And the research of harnessing high-dimensional OAM mode by using integrated quantum photonic technologies is still in its infancy. Here, the authors review the recent progress and discuss the integrated quantum light sources with OAM. The authors introduce the research progress of using OAM for both single photons and entangled photons and emphasize the exciting work on pushing boundaries in high-dimensional quantum states. This may pave the way for the research and practical applications of high-dimensional quantum light sources.