International Business Machines Corporation

Michele Aldeghi

Rolf Allenspach

Gian R Von Salis

A qubit device comprising: a semiconductor substrate layer; a semiconductor substrate layer; a set of control gates defining one or more lines of two or more quantum dots along the substrate layer, each quantum dot being configured for holding a qubit; and a magnet system providing at the substrate layer a superposition of external and local magnetic fields such that qubit spin resonance frequencies of each pair of adjacent quantum dots in each line are different, the magnet system comprising an external magnetic field source for providing the external magnetic field and comprising a magnet on top of every other quantum dot for providing the local magnetic field.

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Cadro, Switzerland

Michele Aldeghi