Low mass dark matter manifests as large amplitude classical bosonic waves which exert subtle forces on sensitive experimental apparatus. In conventional experiments, the tiny predicted signals are swamped by the zero-point noise of the quantum vacuum. In this talk, I will describe current research in surpassing the Standard Quantum Limit in readout noise by utilizing the toolboxes of quantum optics, atomic physics, and quantum computing. Topics include the QCD axion and the vanishing neutron electric dipole moment, quantum non-demolition measurements with superconducting qubits and other metamaterials, and stimulated emission with non-classical sensor preparation.
