| Records |
| Author |
Gershenzon, E.; Goltsman, G.; Orlov, L.; Ptitsina, N. |
| Title |
Population of excited-states of small admixtures in germanium |
Type |
Conference Article |
| Year |
1978 |
Publication |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
Abbreviated Journal |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
| Volume |
42 |
Issue  |
6 |
Pages |
1154-1159 |
| Keywords |
Ge, excited states, admixtures |
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Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia |
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no |
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1723 |
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| Author |
Steudle, Gesine A.; Schietinger, Stefan; Höckel, David; Dorenbos, Sander N.; Zadeh, Iman E.; Zwiller, Valery; Benson, Oliver |
| Title |
Measuring the quantum nature of light with a single source and a single detector |
Type |
Journal Article |
| Year |
2012 |
Publication |
Phys. Rev. A |
Abbreviated Journal |
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| Volume |
86 |
Issue |
5 |
Pages |
053814 |
| Keywords |
SSPD, SNSPD, saturation count rates, dead time, dynamic range |
| Abstract |
An elementary experiment in optics consists of a light source and a detector. Yet, if the source generates nonclassical correlations such an experiment is capable of unambiguously demonstrating the quantum nature of light. We realized such an experiment with a defect center in diamond and a superconducting detector. Previous experiments relied on more complex setups, such as the Hanbury Brown and Twiss configuration, where a beam splitter directs light to two photodetectors, creating the false impression that the beam splitter is a fundamentally required element. As an additional benefit, our results provide a simplification of the widely used photon-correlation techniques. |
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American Physical Society |
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no |
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Serial |
1089 |
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| Author |
Gershenzon, E. M.; Orlov, L. A.; Ptitsina, N. G. |
| Title |
Absorption spectra in electron transitions between excited states of impurities in germanium |
Type |
Journal Article |
| Year |
1975 |
Publication |
JETP Lett. |
Abbreviated Journal |
JETP Lett. |
| Volume |
22 |
Issue |
4 |
Pages |
95-97 |
| Keywords |
Ge, impurities, excited states, absorption spectra |
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no |
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Serial |
1773 |
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| Author |
Galeazzi, Massimiliano |
| Title |
Fundamental noise processes in TES devices |
Type |
Journal Article |
| Year |
2011 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
21 |
Issue |
3 |
Pages |
267-271 |
| Keywords |
TES, Johnson noise, phonon noise, excess noise, flux-flow noise, thermal fluctuation noise |
| Abstract |
Microcalorimeters and bolometers are noise-limited devices, therefore, a proper understanding of all noise sources is essential to predict and interpret their performance. In this paper, I review the fundamental noise processes contributing to Transition Edge Sensor (TES) microcalorimeters and bolometers and their effect on device performance. In particular, I will start with a simple, monolithic device model, moving to a more complex one involving discrete components, to finally move to today's more realistic, comprehensive model. In addition to the basic noise contribution (equilibrium Johnson noise and phonon noise), TES are significantly affected by extra noise, which is commonly referred to as excess noise. Different fundamental processes have been proposed and investigated to explain the origin of this excess noise, in particular near equilibrium non-linear Johnson noise, flux-flow noise, and internal thermal fluctuation noise. Experimental evidence shows that all three processes are real and contribute, at different levels, to the TES noise, although different processes become important at different regimes. It is therefore time to discard the term “excess noise” and consider these terms part of the “fundamental noise processes” instead. |
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| Notes |
Recommended by Klapwijk |
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no |
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Serial |
914 |
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| Author |
Hoevers, H. F. C.; Bento, A. C.; Bruijn, M. P.; Gottardi, L.; Korevaar, M. A. N.; Mels, W. A.; de Korte, P. A. J. |
| Title |
Thermal fluctuation noise in a voltage biased superconducting transition edge thermometer |
Type |
Journal Article |
| Year |
2000 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
77 |
Issue |
26 |
Pages |
4421-4424 |
| Keywords |
TES; bolometer; thermal fluctuation noise; TFN |
| Abstract |
The current noise at the output of a microcalorimeter with a voltage biased superconducting transition edge thermometer is studied in detail. In addition to the two well-known noise sources: thermal fluctuation noise from the heat link to the bath and Johnson noise from the resistive thermometer, a third noise source strongly correlated with the steepness of the thermometer is required to fit the measured noise spectra. Thermal fluctuation noise, originating in the thermometer itself, fully explains the additional noise. A simple model provides quantitative agreement between the observed and calculated noise spectra for all bias points in the superconducting transition. |
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no |
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RPLAB @ gujma @ |
Serial |
759 |
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| Author |
Gershenzon, E. M.; Gol'tsman, G. N. |
| Title |
Transitions of electrons between excited states of donors in germanium |
Type |
Journal Article |
| Year |
1971 |
Publication |
JETP Lett. |
Abbreviated Journal |
JETP Lett. |
| Volume |
14 |
Issue |
2 |
Pages |
63-65 |
| Keywords |
Ge, donors, excited states |
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no |
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Serial |
1740 |
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| Author |
Prober, D. E. |
| Title |
Superconducting terahertz mixer using a transition-edge microbolometer |
Type |
Journal Article |
| Year |
1993 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
62 |
Issue |
17 |
Pages |
2119-2121 |
| Keywords |
HEB mixer, NbN, TES |
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Recommended by Klapwijk |
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no |
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Serial |
244 |
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| Author |
Gershenzon, E.M.; Gol'tsman, G.N.; Ptitsyna, N. G. |
| Title |
Carrier lifetime in excited states of shallow impurities in germanium |
Type |
Journal Article |
| Year |
1977 |
Publication |
JETP Lett. |
Abbreviated Journal |
JETP Lett. |
| Volume |
25 |
Issue |
12 |
Pages |
539-543 |
| Keywords |
Ge, shallow impurities, excited states |
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no |
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Serial |
1726 |
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| Author |
Gorokhov, G.; Bychanok, D.; Gayduchenko, I.; Rogov, Y.; Zhukova, E.; Zhukov, S.; Kadyrov, L.; Fedorov, G.; Ivanov, E.; Kotsilkova, R.; Macutkevic, J.; Kuzhir, P. |
| Title |
THz spectroscopy as a versatile tool for filler distribution diagnostics in polymer nanocomposites |
Type |
Journal Article |
| Year |
2020 |
Publication |
Polymers (Basel) |
Abbreviated Journal |
Polymers (Basel) |
| Volume |
12 |
Issue |
12 |
Pages |
3037 (1 to 14) |
| Keywords |
THz spectroscopy; nanocomposites, percolation threshold, time-domain spectroscopy, time-domain spectrometer, TDS |
| Abstract |
Polymer composites containing nanocarbon fillers are under intensive investigation worldwide due to their remarkable electromagnetic properties distinguished not only by components as such, but the distribution and interaction of the fillers inside the polymer matrix. The theory herein reveals that a particular effect connected with the homogeneity of a composite manifests itself in the terahertz range. Transmission time-domain terahertz spectroscopy was applied to the investigation of nanocomposites obtained by co-extrusion of PLA polymer with additions of graphene nanoplatelets and multi-walled carbon nanotubes. The THz peak of permittivity's imaginary part predicted by the applied model was experimentally shown for GNP-containing composites both below and above the percolation threshold. The physical nature of the peak was explained by the impact on filler particles excluded from the percolation network due to the peculiarities of filler distribution. Terahertz spectroscopy as a versatile instrument of filler distribution diagnostics is discussed. |
| Address |
Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland |
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English |
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2073-4360 |
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| Notes |
PMID:33353036; PMCID:PMC7767186 |
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no |
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Serial |
1780 |
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| Author |
Miller, Aaron J.; Lita, Adriana E.; Calkins, Brice; Vayshenker, Igor; Gruber, Steven M.; Nam, Sae Woo |
| Title |
Compact cryogenic self-aligning fiber-to-detector coupling with losses below one percent |
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Journal Article |
| Year |
2011 |
Publication |
Optics Express |
Abbreviated Journal |
Opt. Express |
| Volume |
19 |
Issue |
10 |
Pages |
9102-9110 |
| Keywords |
TES |
| Abstract |
We present a compact packaging technique for coupling light from a single-mode telecommunication fiber to cryogenic single-photon sensitive devices. Our single-photon detectors are superconducting transition-edge sensors (TESs) with a collection area only a factor of a few larger than the area of the fiber core which presents significant challenges to low-loss fiber-to-detector coupling. The coupling method presented here has low loss, cryogenic compatibility, easy and reproducible assembly and low component cost. The system efficiency of the packaged single-photon counting detectors is verified by the “triplet method†of power-source calibration along with the “multiple attenuator†method that produces a calibrated single-photon flux. These calibration techniques, when used in combination with through-wafer imaging and fiber back-reflection measurements, give us confidence that we have achieved coupling losses below 1 % for all devices packaged according to the self-alignment method presented in this paper. |
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RPLAB @ gujma @ |
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666 |
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