title: Two-photon four-qubit cluster state generation based on a polarization-entangled photon pair.
abstract: We propose and experimentally demonstrate a two-photon four-qubit cluster state generator using linear optics and a single polarization-entangled photon-pair source based on spontaneous parametric down-conversion (SPDC). Our novel scheme provides greater design flexibility compared to previous schemes that rely on hyperentanglement.
authors: Division of Advanced Technology, Korea Research Institute of Standards and Science, 1 Doryong-dong, Yuseong-gu, Daejeon 305-340, Republic of Korea.
authors: Hee Su
authors: HS
authors: Park
authors: Jaeyoon
authors: J
authors: Cho
authors: Jae Yong
authors: JY
authors: Lee
authors: Dong-Hoon
authors: DH
authors: Lee
authors: Sang-Kyung
authors: SK
authors: Choi
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation* / Q000379:methods*; D007909:Lenses; D017785:Photons; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity