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SUMMARY:Controlling Single-Electrons with SINIS Turnstile - Ville Maisi\, 
 Aalto University and MIKES (Finland)
DTSTART:20140303T141500Z
DTEND:20140303T151500Z
UID:TALK50981@talks.cam.ac.uk
CONTACT:Teri Bartlett
DESCRIPTION:Obtaining a quantized electrical current would enable the rede
 finition of the electrical quantities in the SI-unit system. In addition\,
  studying the error sources of the current quantization reveals informatio
 n about the physics behind the devices. We present current quantization ob
 tainable with the so-called SINIS turnstile. We have observed the electrom
 agnetic environment\, two-electron Andreev tunneling and the quasiparticle
  excitations to give rise to errors in these devices. We present the exper
 iments revealing these error sources and show that by proper design\, thes
 e error sources are suppressed. Furthermore\, understanding the error sour
 ces allows us for example to probe electron-phonon interaction in supercon
 ducting state and to realize experimentally a Szilard's engine.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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