Simple experimental scheme of preparing a four-photon entangled state for the teleportation-based realization of a linear optical controlled-NOT gate
Yuuki Tokunaga, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
Phys. Rev. A 71, 030301(R) (2005) - Published 25 March, 2005
Reexamination of entanglement and the quantum phase transition
Min-Fong Yang
Phys. Rev. A 71, 030302(R) (2005) - Published 28 March, 2005