Scalable architecture for coherent microwave control of weakly anharmonic qubits

As the number of qubits in quantum processors continues to increase in the near future, architectures offering scalability of control signals will be essential. We describe an architecture and prototype for improved scalability in microwave control of weakly anharmonic qubits in quantum processors based on repeated unit cells. We present the scalable architecture and test results on a multi-qubit processor based on circuit quantum electrodynamics.