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Superconducting nanowire single-photon detector implemented in a 2D photonic crystal cavity

Münzberg, Julian; Vetter, Andreas; Beutel, Fabian; Hartmann, Wladick; Ferrari, Simone; Pernice, Wolfram H. P.; Rockstuhl, Carsten

The combination of efficient single-photon generation, manipulation, and detection on a single chip poses a major challenge for quantum photonics and all-optical quantum computing. Among a multitude of detection technologies, waveguide-integrated superconducting nanowire single-photon detectors stand out as they promise near-unity detection efficiencies at outstanding timing accuracy and speed. Here, by exploiting the concept of critical coupling, we present the integration of a short nanowire into a two-dimensional double heterostructure photonic crystal cavity to realize an integrated single-photon detector with excellent performance metric. The complete detector characterization reveals on-chip detection efficiencies of almost 70% at telecom wavelengths, recovery times of 480 ps, and vanishingly low dark count rates. Our design paves the way for the implementation of compact on-chip detector arrays and time-multiplexed single-detector schemes.

Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Theoretische Festkörperphysik (TFP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2334-2536
KITopen ID: 1000083338
HGF-Programm 43.23.01; LK 01
Erschienen in Optica
Band 5
Heft 5
Seiten 658-665
Vorab online veröffentlicht am 17.05.2018
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