Media type: E-Article Title: Perfect entanglement concentration of an arbitrary four-photon polarization entangled state via quantum nondemolition detectors Contributor: Wang, Meiyu; Yan, Fengli; Xu, Jingzhou Published: IOP Publishing, 2016 Published in: Journal of Physics B: Atomic, Molecular and Optical Physics, 49 (2016) 15, Seite 155502 Language: Not determined DOI: 10.1088/0953-4075/49/15/155502 ISSN: 0953-4075; 1361-6455 Keywords: Condensed Matter Physics ; Atomic and Molecular Physics, and Optics Origination: Footnote: