Quantum information processing via on-demand light-matter interaction

The diverse applications of light-matter interactions in science and technology stem from the qualitatively distinct ways these interactions manifest. I will present a series of experimental works that employ the light field of high-Q superconducting cavities coupled to non-linear circuit elements to harness the rich dynamics of their interactions for quantum information processing. With these versatile bosonic cQED systems, we show the ability to create, manipulate, and characterise complex non-Gaussian resource states and achieve loss protection for them through phase-space engineering. Moreover, by incorporating frequency-tunability in our devices, we can effectively probe the intersections of different light-matter interaction regimes on demand. Our work shows that such bosonic cQED systems, albeit small in scale, provide a powerful platform to explore quantum information science and applications.