Microwaves and phonons in 1D transmission lines: Giant Cross-Kerr effect, QND Photon Detection and Giant Atoms

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• Johansson, G (Chalmers University of Technology)
• Tuesday 05 August 2014, 15:30-16:10
• Seminar Room 1, Newton Institute.

If you have a question about this talk, please contact Mustapha Amrani.

Quantum Control Engineering: Mathematical Principles and Applications

In this talk, Ill discuss the physics of microwave photons moving in a coplanar wave-guide (1D transmission line) interacting with one or more artificial atoms. Compared to the optical regime, the microwave regime allows for strong and stable coupling of the photons to (artificial) atoms. In particular, Ill discuss the possibility of using the giant cross-Kerr effect for QND detection of propagating microwave photons. Motivated by recent experiments, Ill also discuss what happens when the microwave photons are replaced by surface acoustic wave (SAW) phonons. The phonon velocity is five orders of magnitude slower, implying that the atom is now substantially larger than the wavelength for its spontaneous emission.

This talk is part of the Isaac Newton Institute Seminar Series series.

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