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| Author | Korneeva, Yuliya; Florya, Irina; Vdovichev, Sergey; Moshkova, Mariya; Simonov, Nikita; Kaurova, Natalia; Korneev, Alexander; Goltsman, Gregory | ||||
| Title | Comparison of hot-spot formation in NbN and MoN thin superconducting films after photon absorption | Type | Conference Article | ||
| Year | 2017 | Publication | IEEE Transactions on Applied Superconductivity | Abbreviated Journal  |
IEEE Transactions on Applied Superconductiv |
| Volume | 27 | Issue | 4 | Pages | 5 |
| Keywords | Thin film devices, Superconducitng photoncounting devices, Nanowire single-photon detectors | ||||
| Abstract | In superconducting single-photon detectors SSPD the efficiency of local suppression of superconductivity and hotspot formation is controlled by diffusivity and electron-phonon interaction time. Here we selected a material, 3.6-nm-thick MoNx film, which features diffusivity close to those of NbN traditionally used for SSPD fabrication, but with electron-phonon interaction time an order of magnitude larger. In MoNx detectors we study the dependence of detection efficiency on bias current, photon energy, and strip width and compare it with NbN SSPD. We observe non-linear current-energy dependence in MoNx SSPD and more pronounced plateaus in dependences of detection efficiency on bias current which we attribute to longer electronphonon interaction time. |
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| Notes | Approved | no | |||
| Call Number | RPLAB @ kovalyuk @ | Serial | 1114 | ||
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| Author | Rath, P.; Vetter, A.; Kovalyuk, V.; Ferrari, S.; Kahl, O.; Nebel, C.; Goltsman, G. N.; Korneev, A.; Pernice, W. H. P. | ||||
| Title | Travelling-wave single-photon detectors integrated with diamond photonic circuits: operation at visible and telecom wavelengths with a timing jitter down to 23 ps | Type | Conference Article | ||
| Year | 2016 | Publication | Integrated Optics: Devices, Mat. Technol. XX | Abbreviated Journal |
Integrated Optics: Devices, Mat. Technol. XX |
| Volume | 9750 | Issue | Pages | 135-142 | |
| Keywords | SSPD, Superconducting Nanowire Single-Photon Detector, SNSPD, Single Photon Detector, Diamond Photonics, Diamond Integrated Optics, Diamond Waveguides, Integrated Optics, Low Timing Jitter | ||||
| Abstract | We report on the design, fabrication and measurement of travelling-wave superconducting nanowire single-photon detectors (SNSPDs) integrated with polycrystalline diamond photonic circuits. We analyze their performance both in the near-infrared wavelength regime around 1600 nm and at 765 nm. Near-IR detection is important for compatibility with the telecommunication infrastructure, while operation in the visible wavelength range is relevant for compatibility with the emission line of silicon vacancy centers in diamond which can be used as efficient single-photon sources. Our detectors feature high critical currents (up to 31 μA) and high performance in terms of efficiency (up to 74% at 765 nm), noise-equivalent power (down to 4.4×10-19 W/Hz1/2 at 765 nm) and timing jitter (down to 23 ps). | ||||
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| Publisher | Spie | Place of Publication | Editor | Broquin, J.-E.; Conti, G.N. | |
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| Notes | Approved | no | |||
| Call Number | Serial | 1210 | |||
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| Author | de Lara, D. Perez; Ejrnaes, M.; Casaburi, A.; Lisitskiy, M.; Cristiano, R.; Pagano, S.; Gaggero, A.; Leoni, R.; Golt’sman, G.; Voronov, B. | ||||
| Title | Feasibility investigation of NbN nanowires as detector in time-of-flight mass spectrometers for macromolecules of interest in biology (proteins) | Type | Journal Article | ||
| Year | 2008 | Publication | J. Low Temp. Phys. | Abbreviated Journal |
J. Low Temp. Phys. |
| Volume | 151 | Issue | 3-4 | Pages | 771-776 |
| Keywords | NbN SSPD, SNSPD, nanowires | ||||
| Abstract | We are investigating the possibility of using NbN nanowires as detectors in time-of-flight mass spectrometers for investigation of macromolecules of interest in biology (proteins). NbN nanowires could overcome the two major drawbacks encountered so far by cryogenic detectors, namely the low working temperature in the mK region and the slow temporal response. In fact, NbN nanowires can work at 5 K and the response time is at least a factor 10–100 better than that of other cryogenic detectors. We present a feasibility study based on a numerical code to calculate the response of a NbN nanowire. The parameter space is investigated at different energies from IR to macromolecules (i.e. from eV to keV) in order to understand if larger value of film thickness and width can be used for the keV energy region. We also present preliminary experimental results of irradiation with X-ray photons of NbN to simulate the effect of macromolecules of the same energy. | ||||
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| ISSN | 0022-2291 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 1410 | |||
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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 | Type | 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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| Notes | Approved | no | |||
| Call Number | RPLAB @ gujma @ | Serial | 700 | ||
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| Author | Arutyunov, K. Y.; Ramos-Alvarez, A.; Semenov, A. V.; Korneeva, Y. P.; An, P. P.; Korneev, A. A.; Murphy, A.; Bezryadin, A.; Gol'tsman, G. N. | ||||
| Title | Superconductivity in highly disordered NbN nanowires | Type | Journal Article | ||
| Year | 2016 | Publication | Nanotechnol. | Abbreviated Journal |
Nanotechnol. |
| Volume | 27 | Issue | 47 | Pages | 47lt02 (1 to 8) |
| Keywords | NbN nanowires | ||||
| Abstract | The topic of superconductivity in strongly disordered materials has attracted significant attention. These materials appear to be rather promising for fabrication of various nanoscale devices such as bolometers and transition edge sensors of electromagnetic radiation. The vividly debated subject of intrinsic spatial inhomogeneity responsible for the non-Bardeen-Cooper-Schrieffer relation between the superconducting gap and the pairing potential is crucial both for understanding the fundamental issues of superconductivity in highly disordered superconductors, and for the operation of corresponding nanoelectronic devices. Here we report an experimental study of the electron transport properties of narrow NbN nanowires with effective cross sections of the order of the debated inhomogeneity scales. The temperature dependence of the critical current follows the textbook Ginzburg-Landau prediction for the quasi-one-dimensional superconducting channel I c approximately (1-T/T c)(3/2). We find that conventional models based on the the phase slip mechanism provide reasonable fits for the shape of R(T) transitions. Better agreement with R(T) data can be achieved assuming the existence of short 'weak links' with slightly reduced local critical temperature T c. Hence, one may conclude that an 'exotic' intrinsic electronic inhomogeneity either does not exist in our structures, or, if it does exist, it does not affect their resistive state properties, or does not provide any specific impact distinguishable from conventional weak links. | ||||
| Address | National Research University Higher School of Economics, Moscow Institute of Electronics and Mathematics,109028, Moscow, Russia. P L Kapitza Institute for Physical Problems RAS, Moscow, 119334, Russia | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0957-4484 | ISBN | Medium | ||
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| Notes | PMID:27782000 | Approved | no | ||
| Call Number | Serial | 1332 | |||
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