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Author | Goltsman, G. | ||||
Title | Quantum-photonic integrated circuits | Type | Conference Article | ||
Year | 2019 | Publication | Proc. IWQO | Abbreviated Journal | Proc. IWQO |
Volume | Issue | Pages | 22-23 | ||
Keywords | WSSPD, waveguide SSPD, SNSPD, quantum optics, integrated optics, superconducting nanowire single-photon detector | ||||
Abstract | We show the design, a history of development as well as the most successful and promising approaches for QPICs realization based on hybrid nanophotonic-superconducting devices, where one of the key elements of such a circuit is a waveguide integrated superconducting single-photon detector (WSSPD). The potential of integration with fluorescent molecules is discussed also. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1287 | |||
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Author | Anthore, A.; Pothier, H.; Esteve, D. | ||||
Title | Density of states in a superconductor carrying a supercurrent | Type | Journal Article | ||
Year | 2003 | Publication | Phys. Rev. Lett. | Abbreviated Journal | Phys. Rev. Lett. |
Volume | 90 | Issue | 12 | Pages | 127001 (1 to 4) |
Keywords | Usadel, superconducting nanowire | ||||
Abstract | We have measured the tunneling density of states (DOS) in a superconductor carrying a supercurrent or exposed to an external magnetic field. The pair correlations are weakened by the supercurrent, leading to a modification of the DOS and to a reduction of the gap. As predicted by the theory of superconductivity in diffusive metals, we find that this effect is similar to that of an external magnetic field. | ||||
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Notes | Recommended by Klapwijk | Approved | no | ||
Call Number | Serial | 924 | |||
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Author | Pothier, H.; Guéron, S.; Birge, Norman O.; Esteve, D.; Devoret, M. H. | ||||
Title | Energy distribution function of quasiparticles in mesoscopic wires | Type | Journal Article | ||
Year | 1997 | Publication | Phys. Rev. Lett. | Abbreviated Journal | |
Volume | 79 | Issue | 18 | Pages | 3490-3493 |
Keywords | tunnel probe, metallic nanowire, diffusive wire, diffusive nanowire | ||||
Abstract | We have measured with a tunnel probe the energy distribution function of Landau quasiparticles in metallic diffusive wires connected to two reservoir electrodes, with an applied bias voltage. The distribution function in the middle of a 1.5-μm-long wire resembles the half sum of the Fermi distributions of the reservoirs. The distribution functions in 5-μm-long wires are more rounded, due to interactions between quasiparticles during the longer diffusion time across the wire. From the scaling of the data with the bias voltage, we find that the scattering rate between two quasiparticles varies as <c9><203a>–2, where <c9><203a> is the energy transferred. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 921 | |||
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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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Call Number | RPLAB @ kovalyuk @ | Serial | 1114 | ||
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Author | Семенов, А. В.; Девятов, И. А.; Третьяков, И. В.; Лобанов, Ю. В.; Ожегов, Р. В.; Петренко, Д. В.; Селиверстов, С. В.; Финкель, М. И. | ||||
Title | Вывод уравнения типа уравнения гинзбурга-ландау для нанопроволоки вблизи критического магнитного поля | Type | Journal Article | ||
Year | 2011 | Publication | Журнал радиоэлектроники | Abbreviated Journal | Ж. радиоэлектроники |
Volume | 11 | Issue | Pages | 4 | |
Keywords | superconductivity; nanowire; Ginzburg-Landau equation | ||||
Abstract | Nonlinear Ginzburg-Landau equation for dirty supercondicting 1D wire is derived in the limit of high magnetic field. В пределе больших магнитных полей выведено нелинейное уравнение Гинзбурга-Ландау, описывающее состояние одномерной «грязной» нанопроволоки. |
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Notes | Approved | no | |||
Call Number | RPLAB @ gujma @ | Serial | 714 | ||
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Author | Shah, Nayana; Pekker, David; Goldbart, Paul M. | ||||
Title | Inherent stochasticity of superconductor-resistor switching behavior in nanowires | Type | Journal Article | ||
Year | 2008 | Publication | Phys. Rev. Lett. | Abbreviated Journal | Phys. Rev. Lett. |
Volume | 101 | Issue | Pages | 207001(1 to 4) | |
Keywords | superconducting nanowires, phase-slip, self-heating effect, temperature profile | ||||
Abstract | We study the stochastic dynamics of superconductive-resistive switching in hysteretic current-biased superconducting nanowires undergoing phase-slip fluctuations. We evaluate the mean switching time using the master-equation formalism, and hence obtain the distribution of switching currents. We find that as the temperature is reduced this distribution initially broadens; only at lower temperatures does it show the narrowing with cooling naively expected for phase slips that are thermally activated. We also find that although several phase-slip events are generally necessary to induce switching, there is an experimentally accessible regime of temperatures and currents for which just one single phase-slip event is sufficient to induce switching, via the local heating it causes. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 919 | |||
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Author | Ovchinnikov, Yu. N.; Varlamov, A. A. | ||||
Title | Fluctuation-dissipative phenomena in a narrow superconducting channel carrying current below critical | Type | Journal Article | ||
Year | 2009 | Publication | arXiv | Abbreviated Journal | |
Volume | 0910.2659v1 | Issue | Pages | 1-4 | |
Keywords | superconducting nanowire, resistance calculation | ||||
Abstract | The theory of current transport in a narrow superconducting channel accounting for thermal fluctuations is developed. These fluctuations result in the appearance of small but finite dissipation in the sample. The value of corresponding voltage is found as the function of temperature (close to transition temperature) and arbitrary bias current. It is demonstrated that the value of the activation energy (exponential factor in the Arrenius law) when current approaches to the critical one is proportional to (1-J/Jc)^(5/4). This result is in concordance with the one for the affine phenomenon of the Josephson current decay due to the thermal phase fluctuations, where the activation energy proportional (1-J/J_c)^(3/2)(the difference in the exponents is related to the additional current dependence of the order parameter). Found dependence of the activation energy on current explains the enormous discrepancy between the theoretically predicted before and the experimentally observed broadening of the resistive transition. | ||||
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Notes | arXiv:0910.2659v1; 4 pages, 3 figures | Approved | no | ||
Call Number | Serial | 931 | |||
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Author | Pekker, David; Shah, Nayana; Sahu, Mitrabhanu; Bezryadin, Alexey; Goldbart, Paul M. | ||||
Title | Stochastic dynamics of phase-slip trains and superconductive-resistive switching in current-biased nanowires | Type | Journal Article | ||
Year | 2009 | Publication | Phys. Rev. B | Abbreviated Journal | |
Volume | 80 | Issue | Pages | 214525 (1 to 17) | |
Keywords | superconducting nanowire, phase-slip, order parameter, HEB distributed model, HEB model | ||||
Abstract | Superconducting nanowires fabricated via carbon-nanotube templating can be used to realize and study quasi-one-dimensional superconductors. However, measurement of the linear resistance of these nanowires have been inconclusive in determining the low-temperature behavior of phase-slip fluctuations, both quantal and thermal. Thus, we are motivated to study the nonlinear current-voltage characteristics in current-biased nanowires and the stochastic dynamics of superconductive-resistive switching, as a way of probing phase-slip events. In particular, we address the question: can a single phase-slip event occurring somewhere along the wire—during which the order-parameter fluctuates to zero—induce switching, via the local heating it causes? We explore this and related issues by constructing a stochastic model for the time evolution of the temperature in a nanowire whose ends are maintained at a fixed temperature. We derive the corresponding master equation as a tool for evaluating and analyzing the mean switching time at a given value of current (smaller than the depairing critical current). The model indicates that although, in general, several phase-slip events are necessary to induce switching via a thermal runaway, there is indeed a regime of temperatures and currents in which a single event is sufficient. We carry out a detailed comparison of the results of the model with experimental measurements of the distribution of switching currents, and provide an explanation for the rather counterintuitive broadening of the distribution width that is observed upon lowering the temperature. Moreover, we identify a regime in which the experiments are probing individual phase-slip events, and thus offer a way of unearthing and exploring the physics of nanoscale quantum tunneling of the one-dimensional collective quantum field associated with the superconducting order parameter. | ||||
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Notes | Recommended by Klapwijk | Approved | no | ||
Call Number | Serial | 923 | |||
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Author | Romijn, J.; Klapwijk, T. M.; Renne, M. J.; Mooij, J. E. | ||||
Title | Critical pair-breaking current in superconducting aluminum strips far below Tc | Type | Journal Article | ||
Year | 1982 | Publication | Phys. Rev. B | Abbreviated Journal | Phys. Rev. B |
Volume | 26 | Issue | 7 | Pages | 3648-3655 |
Keywords | superconducting nanowire | ||||
Abstract | Critical currents of narrow, thin aluminum strips have been measured as a function of temperature. For the smallest samples uniformity of the current density is obtained over a large temperature range. Hence the intrinsic limit on the currentcarrying capacity of the superconductor was measured outside the Ginzburg-Landau -regime. The experimental values are compared with recent theoretical predictions by Kupriyanov and Lukichev. An approximate method of solving their equations is given, the results of which agree with the exact solution to within 1%. Experimental data are in excellent agreement with theoretical predictions. The absolute values agree if one assumes a Ïl value of 4×10–16 Ωm2 with vF=1.3×106 m/s. This value for Ïl is the same as that found from measurements of the anomalous skin effect but differs from values extracted from size-effect-limited resistivity. | ||||
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Notes | Recommended by Klapwijk | Approved | no | ||
Call Number | Serial | 925 | |||
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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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