BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-2802
DTSTART:20121112T223000Z
DURATION:PT1H0M0S
DTSTAMP:20260420T034605Z
LAST-MODIFIED:20121112T172630Z
LOCATION:5310 Chamberlin
SUMMARY:Quantum Optics with Quantum Dots and Microwave Resonators: Pho
 ton and Electron Statistics\, Condensed Matter Theory Group Seminar\, 
 Maxim Vavilov
DESCRIPTION:I will discuss electron transport through a double quantum
  dot system coupled to a microwave resonator.  First\, I analyze the p
 hotovoltaic current produced at zero bias across the dots in the prese
 nce of microwave drive of the resonator.  The conversion of photons to
  electronic excitations produces an electric current.  I show that cer
 tain features of this current are due to quantum nature of the electro
 magnetic field in the resonator.  In particular\, the photovoltaic cur
 rent exhibits a double peak dependence on the frequency of an external
  microwave source. <br>
\n<br>
\nThe distance between the peaks is det
 ermined by the strength of interaction between a single photon in the 
 resonator and electrons in the double quantum dot. This double peak fe
 ature disappears as strengths of energy and phase relaxation processes
  increases\, recovering a simple classical condition for maximal curre
 nt when the energy splitting between electronic states in the double q
 uantum dot is equal to the photon energy. Then I discuss properties of
  electric current and photon field at finite bias across the DQD syste
 m and at zero microwave drive.  I show that the low frequency current 
 noise is affected by the coupling to photons and that the generated mi
 crowave field of the resonator may exhibit either photon bunching or a
 ntibunching. <br>
\n
URL:https://www.physics.wisc.edu/events/?id=2802
END:VEVENT
END:VCALENDAR