next Q-MAC meetings in 2018:

3rd Q-MAC symposium in Venice, May 22-25, 2018.

Next regular meeting in Paris,       November 27-28, 2018.

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Antoine Georges leads the CCQ in New York

at the newly founded Flatiron Institute of the Simons Foundation.

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Publication Detail / Abstract

S. J. Denny, S. R. Clark, Y. Laplace, A. Cavalleri, D. Jaksch

Proposed Parametric Cooling of Bilayer Cuprate Superconductors by Terahertz Excitation

Editors' Suggestion - published in PRL on March 31, 2015
> Full text via publisher

We propose and analyze a scheme for parametrically cooling bilayer cuprates based on the selective driving of a c-axis vibrational mode. The scheme exploits the vibration as a transducer making the Josephson plasma frequencies time dependent. We show how modulation at the difference frequency between the intrabilayer and interbilayer plasmon substantially suppresses interbilayer phase fluctuations, responsible for switching c-axis transport from a superconducting to resistive state. Our calculations indicate that this may provide a viable mechanism for stabilizing nonequilibrium superconductivity even above Tc, provided a finite pair density survives between the bilayers out of equilibrium.


Editors' Suggestion!!!

Synopsis: Making Superconductors Sturdier

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