Shot noise for resonant Cooper pair tunneling - art. no. 116601

We study intrinsic noise of current in a superconducting single-electron tr ansistor, taking into account both coherence effects and Coulomb interactio n near a Cooper pair resonance. Because of this interplay, the statistics o f tunneling events deviates from the Poisson distribution and, more importa nt, it shows even-odd asymmetry in the transmitted charge. The zero-frequen cy noise is suppressed significantly when the quasiparticle tunneling rates are comparable to the coherent oscillation frequency of Cooper pairs.