Conceptual schematic and performance advantage of the in-cavity protocol.

Quantum-Enhanced Dark Matter Detection Beyond Rayleigh Limits

Researchers propose a novel quantum sensing protocol that uses in-cavity squeezed states and optimized transient control to mitigate the Rayleigh curse limitation, enabling more sensitive dark matter detection in microwave cavities without requiring non-Gaussian quantum resources that would be incompatible with the strong magnetic fields needed for axion searches.