Open AccessEstablishment of multi-user quantum channel of entangled multi-atom based on cavity QED
Author(s) -
Zelin Han,
Xiang-Fa Zhou,
Xiaolin Yang
Publication year - 2009
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.58.5970
Subject(s) - physics , quantum entanglement , quantum channel , w state , quantum teleportation , quantum network , quantum mechanics , amplitude damping channel , quantum information , cluster state , cavity quantum electrodynamics , quantum , open quantum system
We present a scheme for establishing a multi-user quantum channel of multi-atom entangled W states and GHZ states based on cavity QED. Each user has shared EPR pairs with quantum switch during the leisure time of quantum network. An entangled W state is prepared base on two EPR pairs in cavity field by quantum switch at firstand entanglement swapping and direct measurement is operated on the other EPR pairs to establish a quantum channel of W states between three users. In the same way, we can establish a quantum channel of four atoms entangled W state. Three atoms of quantum switch simultaneously interact with cavity field to establish a quantum channel of entangled GHZ states between three users after direct measurement, and we also establish an N users’ quantum channel of entangled GHZ states.