Author

Hai-Tao Ding

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Preprint Sep 2026

Classical Bound on the Fisher Information Rate of a Dephasing-Enhanced Quantum Neuron

Dephasing can sharpen the activation of a dissipative quantum neuron, but a stationary response does not determine how much input information its output delivers per unit time. For a single qubit with partial-reset updates at rate $\nu$, we derive the threshold response bandwidth and the exact local Fisher information...

Peng Wang, Yu-Xuan Zhang, Hai-Tao Ding et al. · 0 citations

Preprint Aug 2026

The Geometric Phase as a Diagnostic for Driven-Dissipative Oscillators

Driven-dissipative quantum oscillators lock their phase, deform their limit cycles, and undergo dissipative phase transitions, yet these behaviors are read from unrelated quantities defined on the same steady-state density matrix. We show that a single geometric quantity organizes them. Winding the phase of the drive g...

Zeen Sun, Yuan Shen, Hai-Tao Ding et al. · 1 citation

Preprint Sep 2026

Ordering controlled by the measurement-feedback interval in quantum Boltzmann samplers

We show that the measurement--feedback interval alone can induce ordering in a quantum Boltzmann sampler with fixed programmed couplings and a fixed local dissipative rule. At zero environmental dephasing, repeated projective measurements remove transverse coherence regenerated during relaxation, thereby enhancing the...

Peng Wang, Yu-Xuan Zhang, Hai-Tao Ding et al. · 0 citations