Memory Effects in High-Dimensional Systems Faithfully Identified by Hilbert–Schmidt Speed-Based Witness

Autor:	Kobra Mahdavipour, Mahshid Khazaei Shadfar, Hossein Rangani Jahromi, Roberto Morandotti, Rosario Lo Franco
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	non-Markovianity Hilbert–Schmidt speed high-dimensional system multipartite open quantum systems memory effects Science Astrophysics QB460-466 Physics QC1-999
Zdroj:	Entropy, Vol 24, Iss 3, p 395 (2022)
Druh dokumentu:	article
ISSN:	1099-4300
DOI:	10.3390/e24030395
Popis:	A witness of non-Markovianity based on the Hilbert–Schmidt speed (HSS), a special type of quantum statistical speed, has been recently introduced for low-dimensional quantum systems. Such a non-Markovianity witness is particularly useful, being easily computable since no diagonalization of the system density matrix is required. We investigate the sensitivity of this HSS-based witness to detect non-Markovianity in various high-dimensional and multipartite open quantum systems with finite Hilbert spaces. We find that the time behaviors of the HSS-based witness are always in agreement with those of quantum negativity or quantum correlation measure. These results show that the HSS-based witness is a faithful identifier of the memory effects appearing in the quantum evolution of a high-dimensional system with a finite Hilbert space.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/98dc3a1c2eb546a28ecf1326124385c2 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.