@article{Xiang Yan:640, author = {Xiang Yan, Ya-Fei Yu, Zhi-Ming Zhang}, title = {Entanglement concentration for a non-maximally entangled four-photon cluster state}, publisher = {Front. Phys. }, year = {2014}, journal = {Frontiers of Physics}, volume = {9}, number = {5}, eid = {640}, numpages = {5}, pages = {640}, keywords = {cluster state;entanglement concentration;controlled-NOT gate}, url = {https://journal.hep.com.cn/fop/EN/abstract/article_11519.shtml}, doi = {10.1007/s11467-014-0435-z} }