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Monday, December 08, 2014
11:30 AM - 12:30 PM
CNLS Conference Room (03-1690-102)

Quantum Lunch

Dissipative quantum phase transitions for photons

Howard Carmichael
University of Auckland

The Bose-Einstein condensation of atoms brought quantum phase transitions to everyday attention. Photon analogies with bosonic atoms then naturally followed; although phase transitions for photons are dissipative at a fundamental level. My talk addresses dissipative quantum phase transition for photons, working from background in the quantum theory of the laser, through some historical examples, to recent experiments and theoretical proposals. An appreciation of the role of quantum fluctuations and the lack of a fixed particle number (hence a clear thermodynamic limit) is a principal theme.

Host: Sebastian Deffner