Zeno crossovers in the entanglement speed of spin chains with noisy impurities

Autor:	Abhijit P Chaudhari, Shane P Kelly, Riccardo J Valencia-Tortora, Jamir Marino
Rok vydání:	2022
Předmět:	Statistics and Probability Quantum Physics Statistical Mechanics (cond-mat.stat-mech) FOS: Physical sciences Statistical and Nonlinear Physics Statistics Probability and Uncertainty Quantum Physics (quant-ph) Condensed Matter - Statistical Mechanics
Zdroj:	Journal of Statistical Mechanics: Theory and Experiment. 2022:103101
ISSN:	1742-5468
DOI:	10.1088/1742-5468/ac8e5d
Popis:	We use a noisy signal with finite correlation time to drive a spin (dissipative impurity) in the quantum XY spin chain and calculate the dynamics of entanglement entropy of a bipartition of spins, for a stochastic quantum trajectory. We compute the noise averaged entanglement entropy of a bipartition of spins and observe that its speed of spreading decreases at strong dissipation, as a result of the Zeno effect. We recover the Zeno crossover and show that noise averaged entanglement entropy can be used as a proxy for the heating and Zeno regimes. Upon increasing the correlation time of the noise, the location of the Zeno crossover shifts at stronger dissipation, extending the heating regime. Comment: 14 pages, 5 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f40c54ecea132745fc24c87d4b368d30 https://doi.org/10.1088/1742-5468/ac8e5d Zobrazit plný text záznamu