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Träfflista för sökning "WFRF:(Behdad A) srt2:(2016)"

Sökning: WFRF:(Behdad A) > (2016)

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1.
  • Jalai Jafari, Behdad, 1965, et al. (författare)
  • Detection of On-Chip Generated Weak Microwave Radiation Using Superconducting Normal-Metal SET
  • 2016
  • Ingår i: Applied Sciences (Switzerland). - : MDPI AG. - 2076-3417. ; 6:2
  • Tidskriftsartikel (refereegranskat)abstract
    • The present work addresses quantum interaction phenomena of microwave radiation with a single-electron tunneling system. For this study, an integrated circuit is implemented, combining on the same chip a Josephson junction (Al/AlO /Al) oscillator and a single-electron transistor (SET) with the superconducting island (Al) and normal-conducting leads (AuPd). The transistor is demonstrated to operate as a very sensitive photon detector, sensing down to a few tens of photons per second in the microwave frequency range around 100 GHz. On the other hand, the Josephson oscillator, realized as a two-junction SQUID and coupled to the detector via a coplanar transmission line (Al), is shown to provide a tunable source of microwave radiation: controllable variations in power or in frequency were accompanied by significant changes in the detector output, when applying magnetic flux or adjusting the voltage across the SQUID, respectively. It was also shown that the effect of substrate-mediated phonons, generated by our microwave source, on the detector output was negligibly small.
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2.
  • Lotkhov, S. V., et al. (författare)
  • Photon-activated electron hopping in a single-electron trap enhanced by Josephson radiation
  • 2016
  • Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 108:17
  • Tidskriftsartikel (refereegranskat)abstract
    • Using a Josephson junction interferometer (DC SQUID) as a microwave source for irradiating a single-electron trap, both devices fabricated on the same chip, we study the process of photon-assisted tunneling as an effective mechanism of single photon detection. High sensitivity down to a very small oscillation amplitude v(J) similar to 10 nV
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Zorin, A. B. (2)
Jalai Jafari, Behdad ... (2)
Lotkhov, S. V. (2)
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Chalmers tekniska högskola (2)
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Engelska (2)
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2016 (2)Ta bort avgränsningen

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