2008/06/16 by Yu-Bo Sheng, Yu‐Bo Sheng, Fu‐Guo Deng +2
Chemistry · Computer Science · Mathematics · Physics and Astronomy · #Chemistry #Law #Mathematical analysis #Mathematics #Multipartite #Multipartite entanglement #Nonlinear system #Photon #Photon entanglement #Physics #Polarization (electrochemistry) #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Scheme (mathematics) #Squashed entanglement #Statistical physics #Unitary state #W state #quant-ph
paper · pdf · doi:10.1103/physreva.77.062325
published as Physical Review A 77, 062325 (2008) · 7 pages, 4 figures. Physical Review A 77, 062325 (2008)
openalex publication_date 2008/06/16 · arxiv created 2009/08/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a nonlocal entanglement concentration scheme for reconstructing some maximally entangled multipartite states from partially entangled ones by exploiting cross-Kerr nonlinearities to distinguish the parity of two polarization photons. Compared with entanglement concentration schemes based on two-particle collective unitary evolution, this scheme does not require the parties to know accurately information about the partially entangled states---i.e., their coefficients. Moreover, it does not require the parties to possess sophisticated single-photon detectors, which makes this protocol feasible with present techniques. By iteration of entanglement concentration processes, this scheme has a higher efficiency and yield than those with linear optical elements. All these advantages make this scheme more efficient and more convenient than others in practical applications.