Chip-to-chip quantum teleportation and multi-photon entanglement in silicon
D. Llewellyn,Yunhong Ding,Imad I. Faruque,Stefano Paesani,Davide Bacco,Raffaele Santagati,Yan-Jun Qian,Yan Li,Yun-Feng Xiao,Marcus Huber,Mehul Malik,Gary F. Sinclair,Xiao-Qi Zhou,Karsten Rottwitt,Jeremy L. O'Brien,John Rarity,Qihuang Gong,Leif Katsuo Oxenløwe,Jianwei Wang,Jianwei Wang,Mark G. Thompson +20 more
TLDR
In this article, a chip-to-chip quantum teleportation and genuine multipartite entanglement were demonstrated on silicon-photonic circuitry, where four single photons with high purity and indistinguishablity were produced in an array of microresonator sources, without requiring any spectral filtering.Abstract:
Integrated optics provides a versatile platform for quantum information processing and transceiving with photons1–8. The implementation of quantum protocols requires the capability to generate multiple high-quality single photons and process photons with multiple high-fidelity operators9–11. However, previous experimental demonstrations were faced by major challenges in realizing sufficiently high-quality multi-photon sources and multi-qubit operators in a single integrated system4–8, and fully chip-based implementations of multi-qubit quantum tasks remain a significant challenge1–3. Here, we report the demonstration of chip-to-chip quantum teleportation and genuine multipartite entanglement, the core functionalities in quantum technologies, on silicon-photonic circuitry. Four single photons with high purity and indistinguishablity are produced in an array of microresonator sources, without requiring any spectral filtering. Up to four qubits are processed in a reprogrammable linear-optic quantum circuit that facilitates Bell projection and fusion operation. The generation, processing, transceiving and measurement of multi-photon multi-qubit states are all achieved in micrometre-scale silicon chips, fabricated by the complementary metal–oxide–semiconductor process. Our work lays the groundwork for large-scale integrated photonic quantum technologies for communications and computations. Four single-photon states are generated and entangled on a single micrometre-scale silicon chip, and provide the basis for the demonstration of chip-to-chip quantum teleportation.read more
Citations
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Journal ArticleDOI
Advances in high-dimensional quantum entanglement
TL;DR: An overview of the latest technological developments in the generation and manipulation of high-dimensionally entangled photonic systems encoded in various discrete degrees of freedom such as path, transverse spatial modes or time–frequency bins is provided.
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Perspective on the future of silicon photonics and electronics
TL;DR: It is shown that co-packaged silicon photonics and electronics enable the continued progress of both fields and propel further innovation in both.
Journal ArticleDOI
A programmable qudit-based quantum processor
Yulin Chi,Jieshan Huang,Zhanchuan Zhang,Jun Mao,Zinan Zhou,Xiaojiong Chen,Chonghao Zhai,Jueming Bao,Tianxiang Dai,Huihong Yuan,Ming Fang Zhang,Daoxin Dai,Bo Tang,Yan Yang,Zhihua Li,Yunhong Ding,Leif Katsuo Oxenløwe,Mark G. Thompson,Jeremy L. O'Brien,Yan Liu,Qihuang Gong,Jianwei Wang +21 more
TL;DR: In this paper , a programmable qudit-based quantum processor in silicon-photonic integrated circuits is presented, where the quantum Fourier transform (QFT) algorithm is implemented in quaternary.
Journal ArticleDOI
Near-ideal spontaneous photon sources in silicon quantum photonics
Stefano Paesani,Massimo Borghi,Stefano Signorini,Alexandre Maïnos,Lorenzo Pavesi,Anthony Laing +5 more
TL;DR: In this article, a dual-mode pump-delayed excitation scheme was exploited to engineer the emission of spectrally pure photon pairs through intermodal spontaneous four-wave mixing in low-loss spiralled multi-mode waveguides.
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