Spin-polarized transport tomography of a quantum-dot spin qubit via ferromagnetic leads
Three physicists described a method to recover the full quantum state of an electron spin in a dot by measuring currents from magnetic contacts.
EC’s brief
Three physicists outlined a way to determine the full condition of an electron spin inside a small semiconductor structure. They do so by recording currents through attached magnetic metal contacts. The method could support efforts to verify and improve the performance of spin-based units in quantum computers.