Quocor Pty. Ltd.

Cameron Wellard

Andrew Steven Dzurak

Robert Graham Clark

Alexander Rudolf Hamilton

Lloyd Christopher Leonard Hollenberg

Gerard J Milburn

David J Reilly

This invention concerns a quantum device, suitable for quantum computing, based on dopant atoms located in a solid semiconductor or insulator substrate. In further aspects the device is scaled up. The invention also concerns methods of reading out from the devices, initializing them, using them to perform logic operations and making them.

Solid state charge qubit device

Ionisation of one of a pair of dopant atoms in a substrate creates a double well potential, and a charge qubit is realised by the location of one or more electrons or holes within this potential. The dopant atoms may comprise phosphorous atoms, located in a silicon substrate. A solid state quantum computer may be formed using a plurality of pairs of dopant atoms, corresponding gate electrodes, and read-out devices comprising single electron transistors.

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Nth. Carlton, Australia

Cameron Wellard