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 axion dark matter searches, spin-1 NV-center qutrits can
enhance the axion-electron coupling reach by an order of magnitude
beyond qubits. This principle applies broadly to multilevel quantum
systems including superconducting, neutral atom and trapped-ion qutrits,
establishing higher dimensional sensing as a powerful tool for probing
new physics.
