Superconducting nanowire single-photon detector implemented in a 2D photonic crystal cavity
Posted on 2018-05-16 - 17:07
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.
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Münzberg, Julian; Vetter, Andreas; Beutel, Fabian; Hartmann, Wladislaw; Ferrari, Simone; Pernice, Wolfram; et al. (2018). Superconducting nanowire single-photon detector implemented in a 2D photonic crystal cavity. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4064672.v1
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AUTHORS (7)
JM
Julian Münzberg
AV
Andreas Vetter
FB
Fabian Beutel
WH
Wladislaw Hartmann
SF
Simone Ferrari
WP
Wolfram Pernice
CR
Carsten Rockstuhl