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Author (up) Hadfield, Robert H.
Title Single-photon detectors for optical quantum information applications Type Journal Article
Year 2009 Publication Nature Photonics Abbreviated Journal Nature Photonics
Volume 3 Issue Pages 696-705
Keywords SPD
Abstract The past decade has seen a dramatic increase in interest in new single-photon detector technologies. A major cause of this trend has undoubtedly been the push towards optical quantum information applications such as quantum key distribution. These new applications place extreme demands on detector performance that go beyond the capabilities of established single-photon detectors. There has been considerable effort to improve conventional photon-counting detectors and to transform new device concepts into workable technologies for optical quantum information applications. This Review aims to highlight the significant recent progress made in improving single-photon detector technologies, and the impact that these developments will have on quantum optics and quantum information science.
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Call Number RPLAB @ gujma @ Serial 678
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Author (up) Hadfield, Robert. H.; Habif, Jonathan L.; Schlafer, John; Schwall, Robert. E.; Nam, Sae Woo
Title Quantum key distribution at 1550 nm with twin superconducting single-photon detectors Type Journal Article
Year 2006 Publication Applied Physics Letters Abbreviated Journal Appl. Phys. Lett.
Volume 89 Issue 24 Pages 241129
Keywords SSPD, quantum cryptography
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ISSN 0003-6951 ISBN Medium
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Notes Approved no
Call Number Serial 533
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Author (up) Heeres, R.W.; Dorenbos, S.N.; Koene, B.; Solomon, G.S.; Kouwenhoven, L.P.; Zwiller, V.
Title On-Chip Single Plasmon Detection Type Journal Article
Year 2010 Publication Nano Letters Abbreviated Journal Nano Lett.
Volume 10 Issue Pages 661-664
Keywords optical antennas; SSPD; Single surface plasmons; superconducting detectors; semiconductor quantum dots; nanophotonics
Abstract Surface plasmon polaritons (plasmons) have the potential to interface electronic and optical devices. They could prove extremely useful for integrated quantum information processing. Here we demonstrate on-chip electrical detection of single plasmons propagating along gold waveguides. The plasmons are excited using the single-photon emission of an optically emitting quantum dot. After propagating for several micrometers, the plasmons are coupled to a superconducting detector in the near-field. Correlation measurements prove that single plasmons are being detected.
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Call Number RPLAB @ akorneev @ Serial 620
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Author (up) Henrich, D.; Dorner,S.; Hofherr, M.; Il'in, K.; Semenov, A.; Heintze, E.; Scheffler, M.; Dressel, M.; Siegel, M.
Title Broadening of hot-spot response spectrum of superconducting NbN nanowire single-photon detector with reduced nitrogen content Type Journal Article
Year 2012 Publication Abbreviated Journal J. Appl. Phys.
Volume 112 Issue Pages
Keywords SSPD, SNSPD, magnetron sputtering, spectrum, NbN film, nitrogen concentration
Abstract The spectral detection efficiency and the dark count rate of superconducting nanowire

single-photon detectors (SNSPD) have been studied systematically on detectors made from thin

NbN films with different chemical compositions. Reduction of the nitrogen content in the 4 nm

thick NbN films results in a decrease of the dark count rates more than two orders of magnitude

and in a red shift of the cut-off wavelength of the hot-spot SNSPD response. The observed

phenomena are explained by an improvement of uniformity of NbN films that has been confirmed

by a decrease of resistivity and an increase of the ratio of the measured critical current to the

depairing current. The latter factor is considered as the most crucial for both the cut-off

wavelength and the dark count rates of SNSPD. Based on our results we propose a set of criteria

for material properties to optimize SNSPD in the infrared spectral region. VC 2012 American

Institute of Physics. [http://dx.doi.org/10.1063/1.4757625]
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Corporate Author D. Henrich, S. Dorner, M. Hofherr, K. Il'in, A. Semenov, E. Heintze, M. Scheffler, M. Dressel, M. Siegel Thesis
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Language English Summary Language Original Title Broadening of hot-spot response spectrum of superconducting NbN nanowire single-photon detector with reduced nitrogen content
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Notes Approved no
Call Number RPLAB @ seleznev @ Serial 877
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Author (up) Hu, Xiaolong; Zhong, Tian; White, James E.; Dauler, Eric A. Najafi, Faraz; Herder, Charles H.; Wong, Franco N. C.; Berggren, Karl K.
Title Fiber-coupled nanowire photon counter at 1550 nm with 24% system detection efficiency Type Journal Article
Year 2009 Publication Optics Letters Abbreviated Journal Opt. Lett.
Volume 34 Issue 23 Pages 3607-3609
Keywords SNSPD
Abstract We developed a fiber-coupled superconducting nanowire single-photon detector system in a close-cycled cryocooler and achieved 24% and 22% system detection efficiencies at wavelengths of 1550 and 1315 nm, respectively. The maximum dark count rate was ~1000 counts/s.
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Call Number RPLAB @ gujma @ Serial 679
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