講演情報
[21p-C301-1]Superconducting Full-wave Rectifier Using π-JJ-based Phase Shifter
〇Feng Li1, Masayuki Higashi1, Taichi Sato1, Masamitsu Tanaka1, Fujimaki Akira1 (1.Nagoya Univ.)
キーワード：
diode、rectifier、phase shifter
A superconducting diode can be realized with an asymmetric direct-current superconducting quantum interference device (DC SQUID) and an external magnetic field [1]. However, magnetic field is not desired in many applications with superconductor devices. The Josephson relation states that a flux quantum (Φ0) corresponds to a phase difference of 2π, therefore, an intrinsic π/2 phase shifter can serve a magnetic flux of Φ0/4. A superconductor loop with a magnetic Josephson junction (π-JJ), which partially enclosed into a DC SQUID, can server as the π/2 phase shifter to realize a field-free superconducting diode. A superconducting diode can be treated as a half-wave rectifier. We design a full-wave superconducting rectifier with four superconducting diodes connected in a bridge configuration, in which each pair of diodes share the same phase shifter, resulting in a compact device. By applying a triangle input waveform, the functionality of the superconducting rectifier can be verified as it produces a DC voltage output. We think this result offers promising prospects for future technological innovations.