MilestoneHardwareConfirmed

Researchers control a superconducting circuit called the quantronium

May 3, 2002

Denis Vion and colleagues at CEA Saclay operate the quantronium, a superconducting circuit that behaves like a controllable two-level atom. Microwave pulses manipulate its quantum state, and a separate pulsed circuit reads it out.

Why it matters

Combining coherent control and readout in an electrical circuit strengthens the case for superconducting hardware as a quantum-computing platform.

Denis Vion · Daniel Esteve · Michel Devoret

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Related

• NEC researchers control a superconducting qubit for the first time (Apr 29, 1999)
• Yale physicists introduce the transmon, the qubit later used by IBM and Google (Feb 28, 2007)