Advances toward CMOS-transistor quantum computers

According to a team of researchers from INAC and Leti, tomorrow’s quantum computers could be made from simple SOI CMOS transistors!

Quantum computers do not store information as bits, represented by a one or a zero, like traditional computers. They use quantum bits, or qubits, which can represent a superposition of one and zero. And the search is on for a physical medium suitable for producing qubits. The researchers showed that the electron holes (quasiparticles with charge and motion opposite to the electron) trapped in transistor channels could potentially play this role.

The holes’ intrinsic magnetic moment, or spin state, is highly sensitive to grid voltage, which opens the door to future qubits whose spin would be controlled electrically.

Contact: romain.maurand@cea.fr

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