| Records |
| Author |
Yang, J. K. W.; Dauler, E.; Ferri, A.; Pearlman, A.; Verevkin, A.; Gol’tsman, G.; Voronov, B.; Sobolewski, R.; Keicher, W. E.; Berggren, K. K. |
| Title |
Fabrication development for nanowire GHz-counting-rate single-photon detectors |
Type |
Journal Article |
Year  |
2005 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
15 |
Issue |
2 |
Pages |
626-630 |
| Keywords |
NbN SSPD, SNSPD |
| Abstract |
We have developed a fabrication process for GHz-counting-rate, single-photon, high-detection-efficiency, NbN, nanowire detectors. We have demonstrated two processes for the device patterning, one based on the standard polymethylmethacrylate (PMMA) organic positive-tone electron-beam resist, and the other based on the newer hydrogen silsesquioxane (HSQ) negative-tone spin-on-glass resist. The HSQ-based process is simple and robust, providing high resolution and the prospect of high fill-factors. Initial testing results show superconductivity in the films, and suggest that the devices exhibit photosensitivity. |
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Edition |
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| ISSN |
1558-2515 |
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no |
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Serial |
1466 |
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| Author |
Dauler, E. A.; Kerman, A. J.; Robinson, B. S.; Yang, J. K. W.; Voronov, B. M.; Gol’tsman, G. N.; Berggren, K. K. |
| Title |
Achieving high counting rates in superconducting nanowire single-photon detectors |
Type |
Conference Article |
| Year |
2006 |
Publication |
CLEO/QELS |
Abbreviated Journal |
CLEO/QELS |
| Volume |
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Issue |
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Pages |
JTuD3 (1 to 2) |
| Keywords |
SSPD; SNSPD; Detectors; Photodetectors; Quantum optics; Quantum detectors; Photon counting; Photons; Pulse shaping; Quantum communications; Single photon detectors; Superconductors |
| Abstract |
Kinetic inductance is determined to be the primary limitation to the counting rate of superconducting nanowire single-photon counters. Approaches for overcoming this limitation will be discussed. |
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Optical Society of America |
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Conference |
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies |
| Notes |
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no |
| Call Number |
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Serial |
1451 |
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| Author |
Rosfjord, K. M.; Yang, J. K. W.; Dauler, E. A.; Anant, V.; Berggren, K. K.; Kerman, A. J.; Voronov, B. M.; Gol’tsman, G. N. |
| Title |
Increased detection efficiencies of nanowire single-photon detectors by integration of an optical cavity and anti-reflection coating |
Type |
Conference Article |
| Year |
2006 |
Publication |
CLEO/QELS |
Abbreviated Journal |
CLEO/QELS |
| Volume |
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Issue |
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Pages |
JTuF2 (1 to 2) |
| Keywords |
SSPD, SNSPD |
| Abstract |
We fabricate and test superconducting NbN-nanowire single-photon detectors with an integrated optical cavity and anti-reflection coating. We design the cavity and coating such as to maximize absorption in the NbN film of the detector. |
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Conference |
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference |
| Notes |
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no |
| Call Number |
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Serial |
1452 |
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| Author |
Kerman, A. J.; Dauler, E. A.; Keicher, W. E.; Yang, J. K. W.; Berggren, K. K.; Gol’tsman, G.; Voronov, B. |
| Title |
Kinetic-inductance-limited reset time of superconducting nanowire photon counters |
Type |
Journal Article |
| Year |
2006 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
88 |
Issue |
11 |
Pages |
111116 (1 to 3) |
| Keywords |
NbN SSPD, SNSPD |
| Abstract |
We investigate the recovery of superconducting NbN-nanowire photon counters after detection of an optical pulse at a wavelength of 1550nm, and present a model that quantitatively accounts for our observations. The reset time is found to be limited by the large kinetic inductance of these nanowires, which forces a tradeoff between counting rate and either detection efficiency or active area. Devices of usable size and high detection efficiency are found to have reset times orders of magnitude longer than their intrinsic photoresponse time.
The authors acknowledge D. Oates and W. Oliver (MIT Lincoln Laboratory), S.W. Nam, A. Miller, and R. Hadfield (NIST) and R. Sobolewski, A. Pearlman, and A. Verevkin (University of Rochester) for helpful discussions and technical assistance. This work made use of MIT’s shared scanning-electron-beam-lithography facility in the Research Laboratory of Electronics. This work is sponsored by the United States Air Force under Air Force Contract No. FA8721-05-C-0002. Opinions, interpretations, recommendations and conclusions are those of the authors and are not necessarily endorsed by the United States Government. |
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0003-6951 |
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no |
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1453 |
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| Author |
Yang, J. K. W.; Kerman, A. J.; Dauler, E. A.; Anant, V.; Rosfjord, K. M.; Berggren, K. K. |
| Title |
Modeling the electrical and thermal response of superconducting nanowire single-photon detectors |
Type |
Journal Article |
| Year |
2007 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
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| Volume |
17 |
Issue |
2 |
Pages |
581 - 585 |
| Keywords |
SSPD, modeling |
| Abstract |
We modeled the response of superconducting nanowire single-photon detectors during a photodetection event, taking into consideration only the thermal and electrical properties of a superconducting NbN nanowire on a sapphire substrate. Our calculations suggest that heating which occurs after the formation of a photo-induced resistive barrier is responsible for the generation of a measurable voltage pulse. We compared this numerical result with experimental data of a voltage pulse from a slow device, i.e. large kinetic inductance, and obtained a good fit. Using this electro-thermal model, we estimated the temperature rise and the resistance buildup in the nanowire, and the return current at which the nanowire becomes superconducting again. We also show that the reset time of these photodetectors can be decreased by the addition of a series resistance and provide supporting experimental data. Finally we present preliminary results on a detector latching behavior that can also be explained using the electro-thermal model. |
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no |
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625 |
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