In a recent paper [Phys. Rev. A 95, 052118 (2017)2469-992610.1103/PhysRevA.95.052118], the authors claim that our criticism, in Phys. Rev. A 94, 052125 (2016)2469-992610.1103/PhysRevA.94.052125, to some quantum speed limit bounds for open quantum dynamics that appeared recently in literature are invalid. According to the authors, the problem with our analysis would be generated by an artifact of the finite-precision numerical calculations. We analytically show here that it is not possible to have any inconsistency associated with the numerical precision of calculations. Therefore, our criticism of the quantum speed limit bounds continues to be valid. ©2018 American Physical Society.
Documento: | Artículo |
Título: | Comment on "modified quantum-speed-limit bounds for open quantum dynamics in quantum channels" |
Autor: | Mirkin, N.; Toscano, F.; Wisniacki, D.A. |
Filiación: | Departamento de Física J. J. Giambiagi, FCEyN, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina Instituto de Física, Universidade Federal Do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, Rio de Janeiro, 21941-972, Brazil Departamento de Física J. J. Giambiagi, IFIBA, FCEyN, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina |
Palabras clave: | Dynamics; Finite precision; Numerical calculation; Numerical precision; Quantum channel; Quantum dynamics; Speed limit; Quantum theory |
Año: | 2018 |
Volumen: | 97 |
Número: | 4 |
DOI: | http://dx.doi.org/10.1103/PhysRevA.97.046101 |
Título revista: | Physical Review A |
Título revista abreviado: | Phys. Rev. A |
ISSN: | 24699926 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v97_n4_p_Mirkin |