Zobrazeno 1 - 10
of 21
pro vyhledávání: '"B. T. Ulrich"'
Autor:
Shi-Yao Zhu, Michael Fleischhauer, Chang Su, Marlan O. Scully, B. T. Ulrich, Christoph H. Keitel
Publikováno v:
Physical Review. A
An enhancement of the index of refraction accompanied by vanishing absorption is shown to be possible in an ensemble of phase-coherent atoms (``phaseonium''). A survey of various possible schemes in which coherence is established by certain coherent
Autor:
B T, Ulrich
Publikováno v:
Seminars for nurse managers. 9(3)
Never before have members of so many diverse generations worked in organizations at the same time. Successfully working with and managing this multigenerational workforce requires that managers know the values and strengths of each generation and und
Publikováno v:
Le Journal de Physique Colloques. 39:C6-1221
Publikováno v:
IEEE Transactions on Magnetics. 13:862-865
Recent considerations on sandwich-type crystalline-silicon-barrier Josephson junctions are given. We show how low-shunt-capacitance electrode configurations can be realized on the thin silicon membranes. As an extension of our work on sandwich-type s
Autor:
B. T. Ulrich
Publikováno v:
Infrared Physics. 18:429-434
The basic methods of differential heterodyne spectroscopy with Josephson junctions are described. A technique is outlined for bridging the gap between a local oscillator frequency and a signal frequency through the use of a voltage-tunable internal o
Autor:
S. E. Schwarz, B. T. Ulrich
Publikováno v:
Journal of Applied Physics. 48:1870-1873
A theoretical study has been made of the use of antennas to couple radiation to infrared detectors. It is shown in general that for any detector characterized by a specific detectivity D, noise‐equivalent power (NEP) can be reduced until the backgr
Autor:
A.L. Read, D. B. Scarl, G. Cocconi, V.T. Cocconi, Jay Orear, E.W. Jenkins, A. D. Krisch, B. T. Ulrich, R. Rubinstein, W.F. Baker
Publikováno v:
Physical Review. 138:B165-B172
Autor:
B. T. Ulrich, D. B. Scarl, W.F. Baker, Jay Orear, A. D. Krisch, E.W. Jenkins, R. Rubinstein, A.L. Read
Publikováno v:
Physical Review. 136:B779-B782
First evidence for 1−mm wavelength parametric amplification in a Josephson junction microwave source
Autor:
M. T. Levinsen, B. T. Ulrich
Publikováno v:
Applied Physics Letters. 26:131-133
Our observation of 1−mm wavelength radiation generated in a cavity containing a Josephson junction provides evidence for a negative effective microwave resistance in the Josephson junction, and for parametric amplification in the reflection mode by
Autor:
B. T. Ulrich
Publikováno v:
Zeitschrift für angewandte Mathematik und Physik ZAMP. 29:359-361
A voltmeter of sensitivity\(2 \times 10^{ - 15} V/\sqrt {Hz} \left( {2 fV/} \right)\sqrt {Hz} \) is based on direct conversion of the voltage to be measured into a frequency according to the Josephson voltage-frequency relation. Selfpumped parametric