Localization Driven Quantum Sensing

Understand

We show that the delocalization-localization transition in a quantum-many body (QMB) systems is a compelling quantum resource for achieving quantum-enhanced sensitivity in parameter estimation.

• We exploit the vulnerability of a near-transition QMB state against the parameter shift for devising efficient sensing tools.
• In this realm the main focus of this work is to identify, propose and analyze experimentally relevant quantum observables for precision measurement.
• Taking a QMB system as a Fermi lattice under quasi-periodic modulation that supports an energy-independent delocalization-localization transition, we suggest operator-based adiabatic and dynamical quantum sensors endowed with considerable quantum advantages.