title: Local conversion of four Einstein-Podolsky-Rosen photon pairs into four-photon polarization-entangled decoherence-free states with non-photon-number-resolving detectors.
abstract: We propose a linear-optics-based scheme for local conversion of four Einstein-Podolsky-Rosen photon pairs distributed among five parties into four-photon polarization-entangled decoherence-free states using local operations and classical communication. The proposed setup involves simple linear optical elements and non-photon-number-resolving detectors that can only distinguish between the presence and absence of photons, and no information on the exact number of photons can be obtained. This greatly simplifies the experimental realization for linear optical quantum computation and quantum information processing.
authors.affiliation: Department of Physics, Yanbian University, Yanji, Jilin, China. hfwang@ybu.edu.cn
authors.forename: Hong-Fu
authors.initials: HF
authors.lastname: Wang
authors.forename: Shou
authors.initials: S
authors.lastname: Zhang
authors.forename: Ai-Dong
authors.initials: AD
authors.lastname: Zhu
authors.forename: X X
authors.initials: XX
authors.lastname: Yi
authors.forename: Kyu-Hwang
authors.initials: KH
authors.lastname: Yeon
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D055096:Optical Devices; D010783:Photometry / Q000295:instrumentation* / Q000379:methods*; D017785:Photons; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*; D012542:Scattering, Radiation