Observation of nonlocality sharing via not-so-weak measurements

Autor:	Feng, Tianfeng, Ren, Changliang, Tian, Yuling, Luo, Maolin, Shi, Haofei, Chen, Jingling, Zhou, Xiaoqi
Rok vydání:	2019
Předmět:	Quantum Physics
Zdroj:	Phys. Rev. A 102, 032220 (2020)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.102.032220
Popis:	Nonlocality plays a fundamental role in quantum information science. Recently, it has been theoretically predicted and experimentally demonstrated that the nonlocality of an entangled pair may be shared among multiple observers using weak measurements with moderate strength. Here we devise an optimal protocol of nonlocality sharing among three observers and show experimentally that nonlocality sharing may be also achieved using weak measurements with near-maximum strength. Our result sheds light on the interplay between nonlocality and quantum measurements and, may find applications in quantum steering, unbounded randomness certification and quantum communication network. Comment: 6 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1912.02979 Zobrazit plný text záznamu View this record from Arxiv