QuantumWire

Recently, researchers from Pohang University of Science and Technology in South Korea and the National Institute for Materials Science in Japan collaborated successfully to control the quantum mechanical properties of Andreev bound states in bilayer graphene-based Josephson junctions using gate voltage. In this study, the research team used gate voltage to control the quadratic energy dispersion of bilayer graphene as well as the superconducting coherence length in real-time. Utilizing tunneling spectroscopy developed in their previous work, they observed the change of the Andreev bound states at different gate voltages in real time and confirmed that the experimental results matched theoretical predictions.