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quant-ph2026
Crossover from Fast Scrambling to Operator Confinement Tuned by an Auxiliary Qubit
Ryan Buechele, Joseph Szabo, Nandini Trivedi
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…
quant-ph2024
Partial Wavefunction Collapse Under Repeated Weak Measurement of a non-Conserved Observable
Carter Swift, Nandini Trivedi
Two hallmarks of quantum non-demolition (QND) measurement are the ensemble-level conservation of the expectation value of the measured observable and the eventual, inevitable c…