<< August 2015 >>
Sun Mon Tue Wed Thu Fri Sat
 2   3   4   5   6   7   8 
 9   10   11   12   13   14   15 
 16   17   18   19   20   21   22 
 23   24   25   26   27   28   29 
 30   31   
Add an Event Edit This Event

This Week at Physics

<< Spring 2015 Fall 2015 Spring 2016 >>
Subscribe to receive email announcements of events

Event Number 3281

  Friday, February 7th, 2014

Physics Department Colloquium
Quantum Optics with Microwave Photons
Time: 3:30 pm
Place: 2241 Chamberlin Hall (coffee at 4:30 pm)
Speaker: Maxim Vavilov, University of Wisconsin Department of Physics
Abstract: Recent experiments revealed the quantum nature of electromagnetic fields of superconducting circuits at microwave frequencies.

Individual quanta of these fields are photons with energy a few million times smaller than the energy of an optical photon and are extremely hard to detect. A promising device for microwave photon detection is based on Josephson junctions. Even a single microwave photon with tiny energy is sufficient to switch a junction from the superconducting to voltage state, and detection of a photon reduces to observation of voltage pulses across the junction.

In this talk, I will present a theoretical model of a Josephson junction interacting with a quantized electromagnetic field and show that such Josephson photon detectors have relatively high efficiency of detection of microwave photons. I will discuss application of such detectors to qubit readout for quantum information processing and to studies of photon emission statistics by quantum electronic devices.
Poster: http://www.physics.wisc.edu/twap/posters/2014/3281.pdf
Add this event to your calendar

©2013 Board of Regents of the University of Wisconsin System