| Records |
| Author |
Parker, W. H. |
| Title |
Modified heating theory of nonequilibrium superconductors |
Type |
Journal Article |
| Year |
1975 |
Publication |
Phys. Rev. B |
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| Volume |
12 |
Issue |
9 |
Pages |
3667-3672 |
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American Physical Society |
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| Call Number |
mht_Parker_1975 |
Serial |
221 |
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| Author |
Johnson, M. A.; Betz, A. L.; Townes, C. H. |
| Title |
10-μm Heterodyne Stellar Interferometer |
Type |
Journal Article |
| Year |
1974 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
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| Volume |
33 |
Issue |
27 |
Pages |
1617-1620 |
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American Physical Society |
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no |
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228 |
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Heslinga, D. R.; Shafranjuk, S. E.; van Kempen, H.; Klapwijk, T. M. |
| Title |
Observation of double-gap-edge Andreev reflection at Si/Nb interfaces by point-contact spectroscopy |
Type |
Journal Article |
| Year |
1994 |
Publication |
Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
49 |
Issue |
15 |
Pages |
10484-10494 |
| Keywords |
Nb, Si, Nb-Si, Nb/Si, Si/Nb, Andreev reflection, point-contact spectroscopy |
| Abstract |
Andreev reflection point-contact spectroscopy is performed on a bilayer consisting of 50-nm degenerately doped Si backed with Nb. Due to the short mean free path both injection into and transport across the Si layer are diffusive, in contrast to the ballistic conditions prevailing in clean metal layers. Nevertheless a large Andreev signal is observed in the point-contact characteristics, not reduced by elastic scattering in the Si layer or by interface scattering, but only limited by the transmission coefficient of the metal-semiconductor point contact. Two peaks in the Andreev reflection probability are visible, marking the values of the superconducting energy gap at the interface on the Nb and Si sides. This interpretation is supported by a method of solving the Bogolubov equations analytically using a simplified expression for the variation of the order parameter close to the interface. This observation enables a comparison with theoretical predictions of the gap discontinuity in the proximity effect. It is found that the widely used de Gennes model does not agree with the experimental data. |
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American Physical Society |
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1005 |
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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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1089 |
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