By properties of independence state vector in quantum mechanics, a theory to produce entanglement is put forward for the first time and the definition of entangled state and the basic forms of entangledment for multiparticle system are given. Finally the definition is given of entangled degree for basic form entangled state and the formula is derived of entangled degree for two and three_particles system. Furthermore, the criterion of disentangled state for three particles system is described.By properties of independence state vector in quantum mechanics, a theory to produce entanglement is put forward for the first time and the definition of entangled state and the basic forms of entangledment for multiparticle system are given. Finally the definition is given of entangled degree for basic form entangled state and the formula is derived of entangled degree for two and three_particles system. Furthermore, the criterion of disentangled state for three particles system is described.

Journal of Shaanxi Normal UniversityJan 1, 20030 citations

Quantum Networks and Multi-Particle Entanglement

H. J. Briegel, S. J. van Enk, J. I. Cirac +9 more

Springer eBooksJan 1, 20003 citations

Teleportation of entangled states and dense coding using a multiparticle quantum channel

В. Н. Горбачев, Andrew I. Trubilko, A. I. Zhiliba +1 more

A set of protocols for teleportation and dense coding tasks with the use of a N particle quantum channel, presented by entangled states of the GHZ class, is introduced, when N>2. Using a found representation for the multiparticle entangled states of the GHZ class, it has shown, that for dense coding schemes enhancement of the classical capacity of the channel due from entanglement is N/N-1. If N>2 there is no one - to -one correspondence between teleportation and dense coding schemes in comparison with the EPR channel is exploited. A set of schemes, for which two additional operations as entanglement and disentanglement are permitted, is considered.A set of protocols for teleportation and dense coding tasks with the use of a N particle quantum channel, presented by entangled states of the GHZ class, is introduced, when N>2. Using a found representation for the multiparticle entangled states of the GHZ class, it has shown, that for dense coding schemes enhancement of the classical capacity of the channel due from entanglement is N/N-1. If N>2 there is no one - to -one correspondence between teleportation and dense coding schemes in comparison with the EPR channel is exploited. A set of schemes, for which two additional operations as entanglement and disentanglement are permitted, is considered.

arXiv:quant-ph/0011124Nov 30, 200011 citations

Teleportation and dense coding via a multiparticle quantum channel of the GHZ-class

В. Н. Горбачев, A. I. Zhiliba, Andrew I. Trubilko +1 more

A set of protocols for teleportation and dense coding schemes based on a multiparticle quantum channel, represented by the $N$ -particle entangled states of the GHZ class, is introduced. Using a found representation for the GHZ states, it was shown that for dense coding schemes enhancement of the classical capacity of the channel due from entanglement is $N/N-1$ . Within the context of our schemes it becomes clear that there is no one-to one correspondence between teleportation and dense coding schemes in comparison when the EPR channel is exploited. A set of schemes, for which two additional operations as entanglement and disentanglement are permitted, is considered.A set of protocols for teleportation and dense coding schemes based on a multiparticle quantum channel, represented by the $N$-particle entangled states of the GHZ class, is introduced. Using a found representation for the GHZ states, it was shown that for dense coding schemes enhancement of the classical capacity of the channel due from entanglement is $N/N-1$. Within the context of our schemes it becomes clear that there is no one-to one correspondence between teleportation and dense coding schemes in comparison when the EPR channel is exploited. A set of schemes, for which two additional operations as entanglement and disentanglement are permitted, is considered.

Quantum Information and ComputationAug 1, 200212 citations

A set of protocols for teleportation and dense coding schemes based on a multiparticle quantum channel, represented by the

N

-particle entangled states of the GHZ class, is introduced. Using a found representation for the GHZ states, it was shown that for dense coding schemes enhancement of the classical capacity of the channel due from entanglement is

N/N-1

. Within the context of our schemes it becomes clear that there is no one-to one correspondence between teleportation and dense coding schemes in comparison when the EPR channel is exploited. A set of schemes, for which two additional operations as entanglement and disentanglement are permitted, is considered.