| Records |
| Author |
Anant, Vikas; Kerman, Andrew J.; Dauler, Eric A.; Yang, Joel K. W.; Rosfjord, Krist.ine M.; Berggren, Karl K. |
| Title |
Optical properties of superconducting nanowire single-photon detectors |
Type |
Journal Article |
| Year |
2008 |
Publication |
Optics Express |
Abbreviated Journal |
Opt. Express |
| Volume |
16 |
Issue |
14 |
Pages |
10750 |
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1094-4087 |
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RPLAB @ s @ |
Serial |
413 |
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| Author |
Hu, Xiaolong; Dauler, Eric A.; Kerman, Andrew J.; Yang, Joel K. W.; White, James E.; Herder, Charles H.; Berggren, Karl K. |
| Title |
Using surface plasmons to enhance the speed and efficiency of superconducting nanowire single-photon detectors |
Type |
Conference Article |
| Year |
2009 |
Publication |
Proceedings of the Conference on Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference |
Abbreviated Journal |
Proc of Conf. on Lasers and El.-Opt. |
| Volume |
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Issue |
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Pages |
1-2 |
| Keywords |
optical antennas |
| Abstract |
We report our design and fabrication of superconducting nanowire single-photon detectors integrated with gold plasmonic nanostructures, which can enhance the absorption of TM-polarized light, and can enlarge the effective area without sacrificing detector speed. |
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RPLAB @ gujma @ |
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744 |
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| Author |
Hu, Xiaolong; Dauler, Eric A.; Molnar, Richard J.; Berggren, Karl K. |
| Title |
Superconducting nanowire single-photon detectors integrated with optical nano-antennae |
Type |
Journal Article |
| Year |
2011 |
Publication |
Optics Express |
Abbreviated Journal |
Opt. Express |
| Volume |
19 |
Issue |
1 |
Pages |
17-31 |
| Keywords |
optical antennas |
| 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. |
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no |
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RPLAB @ gujma @ |
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745 |
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| Author |
Dauler, Eric; Kerman, Andrew; Robinson, Bryan; Yang, Joel; Voronov, Boris; Goltsman, Gregory; Hamilton, Scott; Berggren, Karl |
| Title |
Photon-number-resolution with sub-30-ps timing using multi-element superconducting nanowire single photon detectors |
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Journal Article |
| Year |
2009 |
Publication |
J. Modern Opt. |
Abbreviated Journal |
J. Modern Opt. |
| Volume |
56 |
Issue |
2 |
Pages |
364-373 |
| Keywords |
PNR SSPD; SNSPD; photon-number-resolution; superconducting nanowire single photon detector; timing jitter; system detection efficiency |
| Abstract |
A photon-number-resolving detector based on a four-element superconducting nanowire single photon detector is demonstrated to have sub-30-ps resolution in measuring the arrival time of individual photons. This detector can be used to characterize the photon statistics of non-pulsed light sources and to mitigate dead-time effects in high-speed photon counting applications. Furthermore, a 25% system detection efficiency at 1550 nm was demonstrated, making the detector useful for both low-flux source characterization and high-speed photon-counting and quantum communication applications. The design, fabrication and testing of this detector are described, and a comparison between the measured and theoretical performance is presented. |
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RPLAB @ gujma @ |
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700 |
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| Author |
Marsili, Francesco; Najafi, Faraz; Dauler, Eric; Bellei, Francesco; Hu, Xiaolong; Csete, Maria; Molnar, Richard J.; Berggren, Karl K. |
| Title |
Single-photon detectors based on ultranarrow superconducting nanowires |
Type |
Journal Article |
| Year |
2011 |
Publication |
Nano Letters |
Abbreviated Journal |
Nano Lett. |
| Volume |
11 |
Issue |
5 |
Pages |
2048–2053 |
| Keywords |
SNSPD |
| Abstract |
We report efficient single-photon detection (η = 20% at 1550 nm wavelength) with ultranarrow (20 and 30 nm wide) superconducting nanowires, which were shown to be more robust to constrictions and more responsive to 1550 nm wavelength photons than standard superconducting nanowire single-photon detectors, based on 90 nm wide nanowires. We also improved our understanding of the physics of superconducting nanowire avalanche photodetectors, which we used to increase the signal-to-noise ratio of ultranarrow-nanowire detectors by a factor of 4, thus relaxing the requirements on the read-out circuitry and making the devices suitable for a broader range of applications. |
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RPLAB @ gujma @ |
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659 |
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