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High efficiency on-chip single-photon detection for diamond nanophotonic circuits

: Kahl, O.; Ferrari, S.; Rath, P.; Vetter, A.; Nebel, C.; Pernice, W.H.P.


Journal of Lightwave Technology 34 (2016), Nr.2, S.249-255
ISSN: 0733-8724
Optical Fiber Communications Conference (OFC) <2015, Los Angeles/Calif.>
Zeitschriftenaufsatz, Konferenzbeitrag
Fraunhofer IAF ()
integrated optics; nanophotonic circuits; quantum photonics; superconducting detector

Nanophotonic integrated circuits made from diamond-on-insulator templates are promising candidates for full-scale classical and quantum optical applications on a chip. For operation on a single photon level, both passive devices as well as light sources and single photon detectors co-implemented with a waveguide architecture are essential. Here, we present an in-depth investigation of the efficiency and timing characteristics of superconducting nanowire single-photon detectors (SNSPDs) situated directly atop diamond waveguides. Effects of nanowire length and critical current on the SNSPD performance are elaborated and true single-photon detection capability is confirmed by statistical measures.