Open AccessMulti-party multi-level quantum key distribution protocol based on entanglement swapping
Author(s) -
YuGuang Yang,
Qiaoyan Wen,
Fu-Chen Zhu
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.5544
Subject(s) - quantum key distribution , quantum entanglement , key (lock) , computer science , eavesdropping , orthonormal basis , key distribution , protocol (science) , multipartite entanglement , quantum cryptography , theoretical computer science , quantum information , quantum , quantum mechanics , physics , squashed entanglement , computer network , computer security , encryption , public key cryptography , medicine , alternative medicine , pathology
A multi-party multi-level quantum key distribution protocol based on entanglement swapping is proposed. A perfect complete orthonormal basis of the bi-party three-level systems is first constructed. By using this basis and swapping the entanglement, bi-party quantum key distribution is realized. In addition, three-level can be generalized to multi-level and bi-party to multi-party,i.e., multi-party multi-level quantum key distribution based on entanglement swapping can be achieved. Using entanglement swapping and multi-level key distribution can significantly increase the efficiency of the detection of eavesdropping, the key generation rate and the information flux.