Device and method for operating a semiconductor spin qubit quantum computer

A method, using a microprocessor, of operating a quantum chip,

• wherein the quantum chip comprises a semiconductor heterostructure and a plurality of gate electrodes arranged on the semiconductor heterostructure to provide a plurality of shuttling lanes for moving a plurality of qubits along a plurality of paths
• the plurality of gate electrodes are further arranged to form a plurality of manipulation zones and a plurality of T-junctions, and
• any one of the manipulation zones comprises an interface at which two of the plurality of shuttling lanes meet one another, and any one of the plurality of T-junctions comprises a junction, at which one of the plurality of shuttling lanes joins another one of the plurality of shuttling lanes,
• the method comprising the steps of
• selecting a path along selected ones of the plurality of shuttling lanes between a start location (S) and a finishing location (F),
• estimating a fidelity relating to shuttling a qubit along the path based on a predetermined shuttling fidelity relating to at least one of the selected ones of the plurality of shuttling lanes.