Control stacks for quantum advantage*

Realizing intermediate-scale quantum computers and fault-tolerant quantum computers requires controlling 1000s of qubits. For this purpose, Qblox has developed a highly distributed control architecture where each module only executes control or readout operations on a small number of qubits. Each module is equipped with a plurality of Q1 processors that in real time sequence pulses, their parameters, and measurement operations. As a result, the stack processes 1000s of outgoing and incoming pulses in full synchronicity while operating with minimal precompilation and communication overhead. We here present a new level of scalability that paves the way for quantum computers with practical applications.