Like microwave optomechanics, it is possible to use high-frequency LC circuits with an embedded superconducting quantum interferometer (SQUID) to detect and control currents and magnetic fields in nearby low-frequency resonant circuits with quantum-limited precision. The interaction between the circuits in these devices – in analogy to the radiation-pressure coupling in cavity optomechanics – is called photon-pressure and has been demonstrated to allow for example photon-photon sideband-cooling of one electrical LC circuit with another. Here in the group, we are investigating novel regimes of this photon-pressure coupling such as dissipative photon-pressure, we are targeting quantum control and quantum-limited sensing of MHz photons, and we want to engineer quantum-limited devices for microwave signal processing using such photon-pressure platforms.
Funded by the German Research Foundation (DFG) via grant no. 490939971 (PI: Daniel Bothner).
