Open AccessExperimental realization of entanglement in multiple degrees of freedom between two quantum memories
Author(s) -
BaoSen Shi,
Dong-Sheng Ding,
MingXin Dong,
Shuai Shi,
Kai Wang,
Shi-Long Liu,
Yan Li,
Zhi-Yuan Zhou,
BaoSen Shi,
GuangCan Guo
Publication year - 2016
Publication title -
nature communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.559
H-Index - 365
ISSN - 2041-1723
DOI - 10.1038/ncomms13514
Subject(s) - quantum entanglement , quantum nonlocality , degrees of freedom (physics and chemistry) , quantum network , realization (probability) , physics , quantum information science , quantum , quantum teleportation , quantum channel , quantum mechanics , topology (electrical circuits) , computer science , mathematics , statistics , combinatorics
Entanglement in multiple degrees of freedom has many benefits over entanglement in a single one. The former enables quantum communication with higher channel capacity and more efficient quantum information processing and is compatible with diverse quantum networks. Establishing multi-degree-of-freedom entangled memories is not only vital for high-capacity quantum communication and computing, but also promising for enhanced violations of nonlocality in quantum systems. However, there have been yet no reports of the experimental realization of multi-degree-of-freedom entangled memories. Here we experimentally established hyper- and hybrid entanglement in multiple degrees of freedom, including path ( K -vector) and orbital angular momentum, between two separated atomic ensembles by using quantum storage. The results are promising for achieving quantum communication and computing with many degrees of freedom.