Quantum computers (QCs) offer significant advantages over traditional computers, including parallel computation and the ability to solve complex problems efficiently [1]. These advantages have driven research into various applications, such as artificial intelligence, cryptography, and security [2]. One critical challenge in QC development is integrating qubit
control circuitry into low-temperature or near-qubit-temperature environments to minimize
thermal noise and improve system performance. In this study, we propose a superconducting microwave generator with tunable amplitude, for qubit control. Our approach builds on the principles of pulse-generated microwaves, replacing part of the filter with a superconducting quantum interference device (SQUID). This
modification enables precise amplitude modulation of the output microwave signal by
adjusting the magnetic flux within the SQUID. Experimental results at 4.2K demonstrate the
successful operation of the microwave generator, confirming its feasibility for lowtemperature quantum applications. Moving forward, we aim to implement and evaluate this
system within a dilution refrigerator to further validate its performance in a quantum
computing environment.