Observation of nonlocal Josephson effect on double InAs nanowires
Sadashige Matsuo, Joon Sue Lee, C. Y. Chang, Yosuke Sato, Kento Ueda, C. J. Palmstrøm, Seigo Tarucha
Abstract
Abstract Short-range coherent coupling of two Josephson junctions (JJs) are predicted to generate a supercurrent in one JJ nonlocally modulated by the phase difference in the other. We report on observation of the nonlocal Josephson effect on double InAs nanowires as experimental evidence of the coherent coupling. We measure one JJ sharing one superconducting electrode with the other JJ and observe switching current oscillation as a control of the nonlocal phase difference. Our result will contribute to engineer novel superconducting phenomena with the short-range coherent coupling.
Topics & Concepts
SupercurrentJosephson effectSuperconductivityCondensed matter physicsCoupling (piping)NanowirePi Josephson junctionPhysicsOscillation (cell signaling)Phase (matter)Phase differenceSynchronization (alternating current)Range (aeronautics)Quantum mechanicsMaterials scienceChemistryTopology (electrical circuits)Electrical engineeringEngineeringMetallurgyBiochemistryComposite materialQuantum and electron transport phenomenaPhysics of Superconductivity and MagnetismQuantum Information and Cryptography