Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation

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

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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 intra- 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 non-equilibrium superconductivity even above $T_c$, provided a finite pair density survives between the bilayers out of equilibrium.
Original languageEnglish
Article number137001
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Issue number13
Early online date31 Mar 2015
Publication statusPublished - 3 Apr 2015


  • cond-mat.supr-con
  • quant-ph


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