Method for Scalable Control of Scalable Quantum Bits using Baseband Pulsing

According to one aspect of the disclosure, a system for performing quantum computations includes: a first environment for being maintained at an ambient temperature, having a classical computing processor; and a second environment for being maintained at a cryogenic temperature, having a plurality of qubits and a multiplexing circuit coupled to the plurality of qubits, each of the plurality of qubits having a gap transition frequency; wherein the classical computing processor is configured to change the states of each of the plurality of qubits by controlling the multiplexing circuit to couple particular ones of the plurality of qubits to a pulsed baseband waveform.