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Author

Nandini Trivedi

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Preprint Aug 2026

Crossover from Fast Scrambling to Operator Confinement Tuned by an Auxiliary Qubit

We demonstrate a static, disorder-free spin chain Hamiltonian which, by tuning the coupling to an auxiliary qubit, realizes a crossover between super-ballistic, ancilla-accelerated scrambling and sub-ballistic operator confinement. Our minimal model is the mixed-field Ising chain with a spin-1/2 ancilla coupled to its...

Ryan Buechele, Joseph C. Szabo, Nandini Trivedi · 0 citations

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