The Josephson quasiparticle (JQP) cycle in a voltage-biased superconducting single-electron transistor (SSET) combines coherent Cooper pair tunneling with incoherent quasiparticle decay. We have measured a striking modification of the JQP process in a system of two SSET's having a large mutual capacitance. We find, among other effects, that the JQP current in one SSET may be enhanced by the presence of a quasiparticle current through the other SSET. A simplified model of the coupled-SSET system is presented which reproduces the enhancement effect.
|Number of pages||8|
|Journal||Journal of Low Temperature Physics|
|Publication status||Published - 2000|
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)