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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 1 — Jan. 3, 2011
  • pp: 17–31

Superconducting nanowire single-photon detectors integrated with optical nano-antennae

Xiaolong Hu, Eric A. Dauler, Richard J. Molnar, and Karl K. Berggren  »View Author Affiliations

Optics Express, Vol. 19, Issue 1, pp. 17-31 (2011)

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Optical nano-antennae have been integrated with semiconductor lasers to intensify light at the nanoscale and photodiodes to enhance photocurrent. In quantum optics, plasmonic metal structures have been used to enhance nonclassical light emission from single quantum dots. Absorption and detection of single photons from free space could also be enhanced by nanometallic antennae, but this has not previously been demonstrated. Here, we use nano-optical transmission effects in a one-dimensional gold structure, combined with optical cavity resonance, to form optical nano-antennae, which are further used to couple single photons from free space into a 80-nm-wide superconducting nanowire. This antenna-assisted coupling enables a superconducting nanowire single-photon detector with 47% device efficiency at the wavelength of 1550 nm and 9-μm-by-9-μm active area while maintaining a reset time of only 5 ns. We demonstrate nanoscale antenna-like structures to achieve exceptional efficiency and speed in single-photon detection.

© 2011 Optical Society of America

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(040.3060) Detectors : Infrared
(040.5160) Detectors : Photodetectors
(040.5570) Detectors : Quantum detectors
(270.5570) Quantum optics : Quantum detectors
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:

Original Manuscript: October 11, 2010
Revised Manuscript: December 8, 2010
Manuscript Accepted: December 8, 2010
Published: December 20, 2010

Xiaolong Hu, Eric A. Dauler, Richard J. Molnar, and Karl K. Berggren, "Superconducting nanowire single-photon detectors integrated with optical nano-antennae," Opt. Express 19, 17-31 (2011)

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