Microwave-driven SET-box with superconducting island

Abstract

The effect of a high-frequency microwave irradiation on the averaged stationary charge in a single-electron tunneling box (SET-box) with superconducting island is investigated. The resulting Q -Q g characteristics are modified compared with those from the well-known constant voltage-driven box. It can be shown that there is a cross-over from the 2e-periodic regime in Q g corresponding to the parity effect to 1e-periodic behavior not only with increasing temperature but also with increasing irradiation amplitude.