2 A Cryo-CMOS Controller with Class-DE Driver and DC Magnetic-Field Tuning for Color-Center-Based Quantum Computers

Color-center quantum bits (qubits), such as the Nitrogen-Vacancy center (NV) in diamond, have demonstrated entanglement between remote (>1.3km) qubits and excellent coherence times 1, all while operating at a few Kelvins. Compared to other qubit technologies typically operating at mK temperatures, the higher operating temperature of NVs enables scalable 3D integration with cryo-CMOS control electronics 2, provides significantly more cooling power, and removes the interconnect bottleneck between the qubits and the electronics in prior art 3–5. Yet, no cryo-CMOS controller for NV-based quantum computers (QC) has been demonstrated.