Superconducting nanowire single-photon detectors integrated with optical nano-antennae
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Berggren-Superconducting.pdf
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4.59 MB
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Author(s)
Hu, Xiaolong
Dauler, Eric A.
Molnar, Richard J.
Berggren, Karl K.
Date Issued
December 2010
Journal
Optics Express
Publisher
Optical Society of America
Citation
Hu, Xiaolong et al. “Superconducting Nanowire Single-photon Detectors Integrated with Optical Nano-antennae.” Optics Express 19.1 (2010): 17. © 2010 The Optical Society
Version
Final published version
Abstract
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.
MIT Department
Lincoln Laboratory
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1364/OE.19.000017
