Quantum Information Science
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Fast-Forwardable Lindbladians Enable Heisenberg-Limit QPE via Quadratic Speedup
Certain Lindbladian processes perform QPE-type tasks at standard quantum limit scaling, unlike Heisenberg-limit QPE. These dynamics permit quadratic fast-forwarding, simulated in O(√(t log(1/ε))) cost for time t and error ε, via a mechanism distinct from Hamiltonian fast-forwarding. This simulation …