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quant-ph2026
Contractivity of the Hilbert--Schmidt Speed and Unitality--Divisibility-Based Witnesses in Finite-Dimensional Quantum Dynamics
Hossein Rangani Jahromi
We investigate the Hilbert--Schmidt speed as a witness of non-Markovianity in finite-dimensional quantum dynamics. For a differentiable one-parameter family of quantum states, the…
quant-ph2026
Trace-to-Hilbert-Schmidt Speed Ratio in Quantum Dynamics: Universal Bounds and Effective Rank
Hossein Rangani Jahromi
We address the ratio between the trace speed and the Hilbert-Schmidt speed for differentiable finite-dimensional quantum states, . S…