A new kernel Γ_eff[Y,O] = Γ_loc[O] + Γ_proxy[O] + Γ_rel[Y,O] isolates residual context dependence in measurement backaction, validated on synthetic hardware where standard proxies are blind by construction.
The A6 experiment family provides evidence that a proxy-only model, Γeff[Y,O]≈Γ loc[O] + Γproxy[O], is operationally incomplete for the tested circuits
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Observable-Conditioned Backaction in Dynamic Circuits: A Higher-Order Context-Conditioned Kernel for Local Dynamics
A new kernel Γ_eff[Y,O] = Γ_loc[O] + Γ_proxy[O] + Γ_rel[Y,O] isolates residual context dependence in measurement backaction, validated on synthetic hardware where standard proxies are blind by construction.