Experimental entanglement distillation of two-qubit mixed states under local operations.
We experimentally demonstrate optimal entanglement distillation from two forms of two-qubit mixed states under local filtering operations according to the constructive method introduced by [F. Verstraete, Phys. Rev. A 64, 010101(R) (2001)10.1103/PhysRevA.64.010101]. In principle, our setup can be easily applied to distilling entanglement from arbitrary two-qubit partially mixed states. We also test the violation of the Clauser-Horne-Shinmony-Holt inequality for the distilled state from the first form of mixed state to show its "hidden nonlocality."
Wang
Zhi-Wei
ZW
Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei 230026, People's Republic of China. sdzzwzw@ustc.edu.cn
Zhou
Xiang-Fa
XF
Huang
Yun-Feng
YF
Zhang
Yong-Sheng
YS
Ren
Xi-Feng
XF
Guo
Guang-Can
GC