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您的检索式：作者名="Fangchao Qu"
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| 1 | Heterogeneously integrated,superconducting silicon-photonic platform for measurementdevice-independent quantum key distribution显示文摘Integrated photonics provides a route to both miniaturization of quantum key distribution(QKD)devices and enhancing their performance.A key element for achieving discrete-variable QKD is a singlephoton detector.It is highly desirable to integrate detectors onto a photonic chip to enable the realization of practical and scalable quantum networks.We realize a heterogeneously integrated,superconducting silicon-photonic chip.Harnessing the unique high-speed feature of our optical waveguide-integrated superconducting detector,we perform the first optimal Bell-state measurement(BSM)of time-bin encoded qubits generated from two independent lasers.The optimal BSM enables an increased key rate of measurement-device-independent QKD(MDI-QKD),which is immune to all attacks against the detection system and hence provides the basis for a QKD network with untrusted relays.Together with the timemultiplexed technique,we have enhanced the sifted key rate by almost one order of magnitude.With a 125-MHz clock rate,we obtain a secure key rate of 6.166 kbps over 24.0 dB loss,which is comparable to the state-of-the-art MDI-QKD experimental results with a GHz clock rate.Combined with integrated QKD transmitters,a scalable,chip-based,and cost-effective QKD network should become realizable in the near future. | Xiaodong Zheng Peiyu Zhang Renyou Ge Liangliang Lu Guanglong He Qi Chen Fangchao Qu Labao Zhang Xinlun Cai Yanqing Lu Shining Zhu Peiheng Wu Xiao-Song Ma | 2021 | Advanced Photonics2021，3，5： | 5 |
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