Protecting Entanglement in a Common Phase Decoherence Environment using Weak Measurement and Quantum Measurement Reversal

Autor:	Ji-Bing Yuan, Qiong Wang, Jian-Sheng Tang, Zhi He
Rok vydání:	2018
Předmět:	Physics Quantum decoherence State parameter Physics and Astronomy (miscellaneous) General Mathematics Phase (waves) Quantum measurement Spectral density Quantum Physics Quantum entanglement Quantum information processing 01 natural sciences 010305 fluids & plasmas Quantum mechanics 0103 physical sciences Weak measurement 010306 general physics
Zdroj:	International Journal of Theoretical Physics. 57:2365-2372
ISSN:	1572-9575 0020-7748
Popis:	Protection of entanglement from disturbance of the environment is an essential task in quantum information processing. We investigate the entanglement protection of a qubit-qubit system interacting with a phase decoherence reservoir by employing the weak measurement (WM) and quantum measurement reversal (QMR). We show explicitly that the quantum entanglement can be obviously protected by means of the proper WM and QMR. In particular, we found that there is a specific initial state parameter region, the entanglement protection ratio, which is determined only by the initial state parameter and independent of the form of the spectral density of the reservoir.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4a4df9275e48d372df5b3d0bda7c049e https://doi.org/10.1007/s10773-018-3759-6 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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