Zhen Yi-Zheng, Xu Xin-Yu, Li Li, Liu Nai-Le, Chen Kai
Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China.
CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.
Entropy (Basel). 2019 Apr 20;21(4):422. doi: 10.3390/e21040422.
The Einstein-Podolsky-Rosen (EPR) steering is a subtle intermediate correlation between entanglement and Bell nonlocality. It not only theoretically completes the whole picture of non-local effects but also practically inspires novel quantum protocols in specific scenarios. However, a verification of EPR steering is still challenging due to difficulties in bounding unsteerable correlations. In this survey, the basic framework to study the bipartite EPR steering is discussed, and general techniques to certify EPR steering correlations are reviewed.
爱因斯坦-波多尔斯基-罗森（EPR）引导是纠缠与贝尔非定域性之间一种微妙的中间关联。它不仅在理论上完善了非局域效应的全貌，还在实际应用中为特定场景下的新型量子协议提供了启发。然而，由于难以界定不可引导的关联，EPR引导的验证仍然具有挑战性。在本次综述中，我们讨论了研究二分EPR引导的基本框架，并回顾了验证EPR引导关联的通用技术。
