期刊
NATURE COMMUNICATIONS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms6873
关键词
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资金
- DARPA Information in a Photon programme, through Army Research Office [W911NF-10-1-0416]
- National Science Foundation [ECCS-1128222]
- Air Force Office of Scientific Research through MURI [FA9550-14-1-0052]
- Claude E. Shannon Fellowship
- Columbia Optics and Quantum Electronics IGERT under NSF [DGE-1069420]
- iQuISE fellowship
- IBM Faculty Award
Photonic-integrated circuits have emerged as a scalable platform for complex quantum systems. A central goal is to integrate single-photon detectors to reduce optical losses, latency and wiring complexity associated with off-chip detectors. Superconducting nanowire single-photon detectors (SNSPDs) are particularly attractive because of high detection efficiency, sub-50-ps jitter and nanosecond-scale reset time. However, while single detectors have been incorporated into individual waveguides, the system detection efficiency of multiple SNSPDs in one photonic circuit-required for scalable quantum photonic circuits-has been limited to <0.2%. Here we introduce a micrometer-scale flip-chip process that enables scalable integration of SNSPDs on a range of photonic circuits. Ten low-jitter detectors are integrated on one circuit with 100% device yield. With an average system detection efficiency beyond 10%, and estimated on-chip detection efficiency of 14-52% for four detectors operated simultaneously, we demonstrate, to the best of our knowledge, the first on-chip photon correlation measurements of non-classical light.
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