Integrated readout of silicon quantum dots in a CMOS chip
We present a cryogenic integrated circuit (IC) fabricated using industrial CMOS technology that hosts three key ingredients of a silicon-based quantum processor: quantum dot arrays (arranged here in a non-interacting 3×3 configuration), digital electronics to...
Automatic virtual voltage extraction of a 2xN quantum dot array
Spin qubits in quantum dots are a compelling platform for fault-tolerant quantum computing due to the potential to fabricate dense two-dimensional arrays with nearest neighbour couplings, a requirement to implement the surface code. However, due to the proximity of...
Dispersive readout of ambipolar quantum dots
Electron and holes each offer different advantages as spin qubits. We report measurements of ambipolar gate-defined quantum dots in silicon on insulator (SOI) nanowires fabricated using a customised complementary metal-oxide-semiconductor (CMOS) process. The ability...