Speaker
Xiaolin Ma
Description
Quantum sensing with qubits has advanced fundamental physics searches,
but higher dimensional systems offer untapped potential. We present a universal qutrit
framework that yields a sequence-independent fourfold increase in quantum Fisher information and a twofold gain in sensitivity. In ultralight dark matter searches, spin-1 NV-center qutrits can enhance the axion-electron coupling reach by an order of magnitude beyond qubits. Finally, we outline a general formalism for multilevel quantum sensors, providing a systematic pathway toward exploiting higher-dimensional Hilbert spaces for
precision measurements.
