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quant-ph2022
Quantum adiabaticity in many-body systems and almost-orthogonality in complementary subspace
Jyong-Hao Chen, Vadim Cheianov
We investigate why, in quantum many-body systems, the adiabatic fidelity and the overlap between the initial state and instantaneous ground states often yield nearly identical valu…
quant-ph2022★ 4 cited
Lower bounds for adiabatic quantum algorithms by quantum speed limits
Jyong-Hao Chen
We introduce a simple framework for estimating lower bounds on the runtime of a broad class of adiabatic quantum algorithms. The central formula consists of calculating the varianc…