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Author (up) 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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ISSN 1094-4087 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number RPLAB @ s @ Serial 413
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Author (up) 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 Issue 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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Notes Approved no
Call Number RPLAB @ gujma @ Serial 744
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Author (up) Kerman, Andrew J.; Yang, Joel K. W.; Molnar, Richard J.; Dauler, Eric A.; Berggren, Karl K.
Title Electrothermal feedback in superconducting nanowire single-photon detectors Type Journal Article
Year 2009 Publication Phys. Rev. B Abbreviated Journal Phys. Rev. B
Volume 79 Issue 10 Pages 4
Keywords SNSPD
Abstract We investigate the role of electrothermal feedback in the operation of superconducting nanowire single-photon detectors (SNSPDs). It is found that the desired mode of operation for SNSPDs is only achieved if this feedback is unstable, which happens naturally through the slow electrical response associated with their relatively large kinetic inductance. If this response is sped up in an effort to increase the device count rate, the electrothermal feedback becomes stable and results in an effect known as latching, where the device is locked in a resistive state and can no longer detect photons. We present a set of experiments which elucidate this effect and a simple model which quantitatively explains the results.
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Notes Approved no
Call Number RPLAB @ gujma @ Serial 680
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Author (up) Rosfjord, Kristine M.; Yang, Joel K. W.; Dauler, Eric A.; Kerman, Andrew J.; Vikas Anant; Voronov, Boris M.; Gol'tsman, Gregory N.; Berggren, Karl K.
Title Nanowire Single-photon detector with an integrated optical cavity and anti-reflection coating Type Journal Article
Year 2006 Publication Opt. Express Abbreviated Journal Opt. Express
Volume 14 Issue 2 Pages 527-534
Keywords SSPD, SNSPD, cavity
Abstract We have fabricated and tested superconducting single-photon detectors and demonstrated detection efficiencies of 57% at 1550-nm wavelength and 67% at 1064 nm. In addition to the peak detection efficiency, a median detection efficiency of 47.7% was measured over 132 devices at 1550 nm. These measurements were made at 1.8K, with each device biased to 97.5% of its critical current. The high detection efficiencies resulted from the addition of an optical cavity and anti-reflection coating to a nanowire photodetector, creating an integrated nanoelectrophotonic device with enhanced performance relative to the original device. Here, the testing apparatus and the fabrication process are presented. The detection efficiency of devices before and after the addition of optical elements is also reported.
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ISSN 1094-4087 ISBN Medium
Area Expedition Conference
Notes PMID:19503367 Approved no
Call Number Serial 388
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Author (up) Stevens, Martin J.; Baek, Burm; Dauler, Eric A.; Kerman, Andrew J.; Molnar, Richard J.; Hamilton, Scott A.; Berggren, Karl K.; Mirin, Richard P.; Nam, Sae Woo
Title High-order temporal coherences of
chaotic and laser light Type Journal Article
Year 2010 Publication Optics Express Abbreviated Journal Opt. Express
Volume 18 Issue 2 Pages 1430-1437
Keywords SNSPD
Abstract We demonstrate a new approach to measuring high-order temporal coherences that uses a four-element superconducting nanowire single-photon detector. The four independent, interleaved single-photon-sensitive elements parse a single spatial mode of an optical beam over dimensions smaller than the minimum diffraction-limited spot size. Integrating this device with four-channel time-tagging electronics to generate multi-start, multi-stop histograms enables measurement of temporal coherences up to fourth order for a continuous range of all associated time delays. We observe high-order photon bunching from a chaotic, pseudo-thermal light source, measuring maximum third- and fourth-order coherence values of 5.87 ± 0.17 and 23.1 ± 1.8, respectively, in agreement with the theoretically predicted values of 3! = 6 and 4! = 24. Laser light, by contrast, is confirmed to have coherence values of approximately 1 for second, third and fourth orders at all time delays.
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Notes SSPD Approved no
Call Number RPLAB @ gujma @ Serial 685
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