Entanglement dynamics with string measurement operators

Autor:	Piccitto, Giulia, Russomanno, Angelo, Rossini, Davide
Rok vydání:	2023
Předmět:	Condensed Matter - Statistical Mechanics Quantum Physics
Zdroj:	SciPost Phys. Core 6, 078 (2023)
Druh dokumentu:	Working Paper
DOI:	10.21468/SciPostPhysCore.6.4.078
Popis:	We explain how to apply a Gaussian-preserving operator to a fermionic Gaussian state. We use this method to study the evolution of the entanglement entropy of an Ising spin chain following a Lindblad dynamics with string measurement operators, focusing on the quantum-jump unraveling of such Lindbladian. We find that the asymptotic entanglement entropy obeys an area law for finite-range string operators and a volume law for ranges of the string which scale with the system size. The same behavior is observed for the measurement-only dynamics, suggesting that measurements can play a leading role in this context. Comment: 27 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2303.07102 Zobrazit plný text záznamu View this record from Arxiv