Mabuchi's group studies continuous quantum measurement and feedback in cavity-QED and photonic circuit platforms, developing the theory and hardware for real-time quantum-limited monitoring and control of light-matter systems, foundational to many quantum-sensing readout schemes.

Murch studies continuous quantum measurement and feedback control in superconducting circuit QED systems, including some of the earliest experiments resolving quantum backaction and weak-value amplification, work directly relevant to the quantum limits of continuous sensing and metrology.