Quantum processor, computer program, and method for operating single-spin qubit in quantum processor

Abstract

A method for operating a single-spin qubit in a quantum processor is provided, wherein the method comprises: preparing a single-spin qubit in a first quantum dot of the quantum processor, wherein information in the single-spin qubit is encoded in the single spin states of a charge carrier, preferably the single spin states of a hole, in the first quantum dot, preferably a type IV semiconductor quantum dot such as a silicon quantum dot or a silicon-germanium quantum dot; and, executing a single qubit gate operation on the single-spin qubit by modifying the quantization axis and / or energy splitting of the single-spin qubit for a predetermined time, the modification of the quantization axis and / or energy splitting being based on controlling an anisotropic g-tensor associated with the single-spin qubit and / or a magnetic field locally applied to the single-spin qubit.