Cavity-mode initialization via a Rabi-driven qubit

Microwave cavity modes with long coherence times are used in many different quantum computing systems. During normal operation of such systems, these modes, called "memory modes,"often need to be set to different coherent photonic occupations. In this work we present a technique we call "Rabi-driven reset"in which the state of a memory mode is transferred into a decaying mode. This is done through a Rabi-driven qubit that is coupled to both modes via sideband driving tones. The outcome of the method is the initialization of the memory mode in any required coherent state. Simulations are presented to demonstrate the effectiveness of this technique, along with a comparison to an existing coupling method. Our simulations predict a decrease of an order of magnitude in initialization times compared with existing methods.