This is coupled to a photon racetrack carved out of silicon. A C-NOT logic gate requires two input photons. So the circuit works by zapping the quantum dot twice, generating two photons.

This allows the gate capacitance to be discharged rapidly. To significantly widen the number of transformer choices, the circuit uses a primary drive scheme that does not require a separate reset ...

The SDE provides new functionalities for superconducting circuits and future ... either with a magnetic field or a gate electric field. "The gate-tunable diode functionalities in the field-effect ...