Optimizing eight circuit parameters via gradient descent on classical Fisher information yields up to 1598% CFI gains and 133x more useful events per pulse for N=5 NOON states, pushing performance closer to the Heisenberg limit than the Afek et al. 2010 setup.
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Quantum-Enhanced Single-Parameter Phase Estimation with Adaptive NOON States
Optimizing eight circuit parameters via gradient descent on classical Fisher information yields up to 1598% CFI gains and 133x more useful events per pulse for N=5 NOON states, pushing performance closer to the Heisenberg limit than the Afek et al. 2010 setup.