Circuit QED Quantum Sensing
Using superconducting qubits and resonators to probe collective excitations and phase transitions in correlated and topological materials.
Superconducting qubits and resonators provide quantum-limited sensitivity to charge, flux, and mechanical motion, making them powerful probes of macroscopic quantum behavior in correlated and topological materials. We use circuit QED (cQED) techniques to study:
- order-parameter fluctuations near quantum phase transitions
- collective excitations
- microscopic mechanisms behind unconventional superconductivity
By coupling qubits to material excitations in the GHz regime, we reveal dynamical processes invisible to transport or optical probes, helping uncover how collective coherence emerges from interacting electrons.