  Superconducting quantum computer is manufactured based on semiconductor
process which makes qubits integration possible. At the same time, this kind of
qubit exhibits high performance fidelity, de-coherence time, scalability and
requires a programmable arbitrary waveform generator (AWG). This paper presents
implementation of an AWG which composed of two gigabit samples per second
(GSPS) sampling rate, 16 bit vertical resolution digital to analog converters
(DACs). The AWG integrated with separate microwave devices onto a metal plate
for the scale-up consideration. A special waveform sequence output controller
is designed to realize seamless waveform switching and arbitrary waveform
generator. The jitter in multiple AWG channels is around 10ps, Integral
nonlinearity (INL) as well as differential nonlinearity (DNL) is about 2 LSB,
and the qubit performance of the de-coherence time (T2*) achieved 33% promotion
over that of a commercial 1 GSPS, 14 bit AWG.
