摘要
We experimentally demonstrate a quantum key distribution protocol using entangled photon pairs in orbital angular momentum(OAM).Here Alice uses a fixed phase hologram to modulate her OAM state on one photon with a spatial light modulator(SLM),while Bob uses the designed N different phase holograms for his N-based keys on the other photon with his SLM.With coincidences,Alice can fully retrieve the keys sent by Bob without reconciliation.We report the experiment results with N=3 and OAM eigenmodes|l=±1>,and discuss the security from the light path and typical attacks.
作者
赵生妹
巩龙延
李永强
杨华
盛宇波
程维文
ZHAO Sheng-Mei;GONG Long-Yan;LI Yong-Qiang;YANG Hua;SHENG Yu-Bo;CHENG Wei-Wen(Institute of Signal Processing and Transmission,Nanjing University of Posts and Telecommunications,Nanjing 210003;Department of Applied Physics,Nanjing University of Posts and Telecommunications,Nanjing 210003)
基金
Supported by the National Natural Science Foundation of China under Grant Nos 61271238 and 10904074
the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No 20123223110003
the University Natural Science Research Foundation of Jiangsu Province under Grant No 11KJA510002
the Open Research Fund of National Laboratory of Solid State Microstructures under Grant Nos M25020 and M25022
Qinglan Project of Jiangsu Province
the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
