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High-speed integrated QKD system
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DOI：10.1364/PRJ.481475.png)
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Quantum key distribution (QKD) is nowadays a well-established method for generating secret keys at a distance in an information-theoretically secure way, as the secrecy of QKD relies on the laws of quantum physics and not on computational complexity. In order to industrialize QKD, low-cost, mass-manufactured, and practical QKD setups are required. Hence, photonic and electronic integration of the sender's and receiver's respective compo-nents is currently in the spotlight. Here we present a high-speed (2.5 GHz) integrated QKD setup featuring a transmitter chip in silicon photonics allowing for high-speed modulation and accurate state preparation, as well as a polarization-independent low-loss receiver chip in aluminum borosilicate glass fabricated by the femtosecond laser micromachining technique. Our system achieves raw bit error rates, quantum bit error rates, and secret key rates equivalent to a much more complex state-of-the-art setup based on discrete components [A. Boaron et al., Phys. Rev. Lett. 121, 190502 (2018)].& COPY; 2023 Chinese Laser Press
Keyword:
QUANTUM
BIREFRINGENCE
PHOTONICS
CHIP
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IF:
7.2
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2.4K
被引数:
1.3W
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Silicon photonic transmitter for polarization-encoded quantum key distribution用于偏振编码量子密钥分发的硅光子发射机.png)
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OAAI分享收藏High-Speed Measurement-Device-Independent Quantum Key Distribution with Integrated Silicon Photonics集成硅光子学的高速测量-与设备无关的量子密钥分发PHYSICAL REVIEW XOAAI
PHYSICAL REVIEW XIF15.7
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