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SUMMARY:Microwaves and phonons in 1D transmission lines: Giant Cross-Kerr 
 effect\, QND Photon Detection and Giant Atoms - Johansson\, G (Chalmers Un
 iversity of Technology)
DTSTART:20140805T143000Z
DTEND:20140805T151000Z
UID:TALK53605@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:In this talk\, Ill discuss the physics of microwave photons mo
 ving in a coplanar wave-guide (1D transmission line) interacting with one 
 or more artificial atoms. Compared to the optical regime\, the microwave r
 egime allows for strong and stable coupling of the photons to (artificial)
  atoms. In particular\, Ill discuss the possibility of using the giant cro
 ss-Kerr effect for QND detection of propagating microwave photons. Motivat
 ed by recent experiments\, Ill also discuss what happens when the microwav
 e photons are replaced by surface acoustic wave (SAW) phonons. The phonon 
 velocity is five orders of magnitude slower\, implying that the atom is no
 w substantially larger than the wavelength for its spontaneous emission.\n
LOCATION:Seminar Room 1\, Newton Institute
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