Author/Authors :
E Turlot، نويسنده , , S Linkwitz، نويسنده , , D Esteve، نويسنده , , C Urbina، نويسنده , , M.H. Devoret، نويسنده , , H Grabert، نويسنده ,
Abstract :
The zero-voltage state of a current biased Josephson tunnel junction is metastable and the system can switch to the voltage state by thermal activation. In the presence of a microwave current the rate of escape is resonantly activated when the microwave frequency matches the plasma frequency [M.H. Devoret et al. Phys. Rev. Lett. 53 (1984) 1260]. In accordance with theoretical predictions [S. Linkwitz and H. Grabert, Phys. Rev. B 44 (1991) 11 901] we have measured high frequency satellites of the resonant activation peak.
