A qubit probe coupled to a subset of oscillator nodes exhibits enhanced Fisher information in its excited-state population as the inactive fraction approaches the aging transition point, enabling precise estimation even in the classical regime.
Daido, Aging transition and disorder-induced coherence in locally coupled oscillators, EPL84, 10002 (2008)
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Quantum sensing of aging transitions
A qubit probe coupled to a subset of oscillator nodes exhibits enhanced Fisher information in its excited-state population as the inactive fraction approaches the aging transition point, enabling precise estimation even in the classical regime.