期刊
NPJ QUANTUM INFORMATION
卷 5, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41534-019-0205-4
关键词
-
类别
资金
- National Key RD Program [2016YFA0301700]
- National Natural Science Foundation of China (NSFC) [61590932, 11774333, 61725503, 61431166001]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB24030601]
- Anhui Initiative in Quantum Information Technologies [AHY130300]
- Fundamental Research Funds for the Central Universities
- South African National Research Foundation SARChI program
Integrated photonics is becoming an ideal platform for generating two-photon entangled states with high brightness, high stability, and scalability. This high brightness and high quality of photon pair sources encourages researchers further to study and manipulate multiphoton entangled states. Here, we experimentally demonstrate frequency-degenerate four-photon entangled state generation based on a single silicon nanowire 1 cm in length. The polarization encoded entangled states are generated with the help of a Sagnac loop using additional optical elements. The states are analyzed using quantum interference and state tomography techniques. As an example, we show that the generated quantum states can be used to achieve phase super-resolution. Our work provides a method for preparing indistinguishable multi-photon entangled states and realizing quantum algorithms in a compact on-chip setting.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据