Dynamic Framework for Criticality-Enhanced Quantum Sensing

Quantum criticality, as a fascinating quantum phenomenon, may provide significant advantages for sensing. Here we propose dynamic framework sensing with family of Hamiltonians that undergo phase transitions (QPT). By giving the formalism Fisher information (QFI) based on critical dynamics, demonstrate its divergent feature when approaching point. We illustrate basic principle and details experimental implementation using Rabi model. The is applicable to variety examples does not rely stringent requirement particular state preparation or adiabatic evolution. It expected route towards criticality-enhanced