%0 Journal Article
%T High speed travelling wave single-photon detectors with near-unity quantum efficiency
%A Pernice, W.
%A Schuck, C.
%A Li, M.
%A Goltsman, G. N.
%A Sergienko, A. V.
%A Tang, H. X.
%J arXiv
%D 2011
%C arXiv:1108.5299
%F Pernice_etal2011
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=661), last updated on Wed, 14 Dec 2011 21:04:38 -0600
%X 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.
%K SPD
%P 1-14