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math-ph2021
Constraints for the spectra of generators of quantum dynamical semigroups
Dariusz Chruscinski, Ryohei Fujii, Gen Kimura +1
Motivated by a spectral analysis of the generator of completely positive trace-preserving semigroup, we analyze a real functional $$ A,B \in M_n(\mathbb{C}) \to r(A,B) = \frac{1}{2…
quant-ph2021★ 5 cited
Unitary equivalence classes of split-step quantum walks
Akihiro Narimatsu, Hiromichi Ohno, Kazuyuki Wada
This study investigates the unitary equivalence of split-step quantum walks (SSQW). We consider a new class of quantum walks which includes all SSQWs. We show the explicit form of…