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quant-ph2026
Absence of poor local minima in matrix product states
Hao-Kai Zhang, Chenghong Zhu, Shuo Liu +2
Quantum circuits suffer from severe trainability issues: even shallow circuits are swamped with poor local minima. Yet matrix product states (MPS), which can be prepared by sequent…
quant-ph2026
Nonstabilizerness Mpemba Effects
Zhenyu Xiao, Hao-Kai Zhang, Shuo Liu
Quantum state preparation can be strikingly counterintuitive: the fastest route to a target state need not start from the apparently closest initial condition. We uncover such a qu…