Hideaki Takayanagi

TL;DR: In this article, the authors studied the retrapping current of the DC-SQUID without the qubit to order to characterize the DC SQUID itself, which is related to the dissipation of the SQUID and the qu bit.

TL;DR: In this article, the dc Josephson current through a constriction was calculated for two-dimensional superconductor-semiconductor-superconductor junctions, and it was shown that, when the de Broglie wave length is comparable with the width of the constriction, the critical current changes stepwise as a function of the width.

TL;DR: In this paper, the spin correlation in a double quantum-dot-quantum-wire coupled device revealed in low-temperature transport characteristics was studied. But the authors focused on the nonlocal control of the Kondo effect in one dot by manipulating the spin states of the other, and the modulation of the local density of states in the wire region due to the Fano-Kondo antiresonance and the Ruderman-Kittel-Kasuya-Yoshida exchange interaction are the two possible mechanisms underlying the observed features.

TL;DR: In this paper, a superconducting flux qubit and a harmonic LC-oscillator that are spatially separated were experimentally observed and the quantum mechanically manipulated coupling of the two qubits was demonstrated.

TL;DR: In this article, the conductance of a normal metal film (N) in contact with two superconductors (S) is calculated in the presence of a constant and oscillating Vωcosωt bias voltage between N and S.