@Article{Pernice_etal2011, author="Pernice, W. and Schuck, C. and Li, M. and Goltsman, G. N. and Sergienko, A. V. and Tang, H. X.", title="High speed travelling wave single-photon detectors with near-unity quantum efficiency", journal="arXiv", year="2011", address="arXiv:1108.5299", pages="1--14", optkeywords="SPD", abstract="Ultrafast, high quantum efficiency single photon detectors are among the most sought-after elements in modern quantum optics and quantum communication. Close-to-unity photon detection efficiency is essential for scalable measurement-based quantum computation, quantum key distribution, and loophole-free Bell experiments. However, imperfect modal matching and finite photon absorption rates have usually limited the maximum attainable detection efficiency of single photon detectors. Here we demonstrate a superconducting nanowire detector atop nanophotonic waveguides and achieve single photon detection efficiency up to 94{\%} at telecom wavelengths. Our detectors are fully embedded in a scalable, low loss silicon photonic circuit and provide ultrashort timing jitter of 18ps at multi-GHz detection rates. Exploiting this high temporal resolution we demonstrate ballistic photon transport in silicon ring resonators. The direct implementation of such a detector with high quantum efficiency, high detection speed and low jitter time on chip overcomes a major barrier in integrated quantum photonics.", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=661), last updated on Wed, 14 Dec 2011 21:04:38 -0600" }