The maximal entangled three-particle state is unique

Manqi Ruan, Gang Xu, Jinyan Zeng

Zhan Zhan, You-Bang, Wang +1 more

Guo Zhan-ying, Ruxian Yao

This paper presented a scheme to probabilistically teleport an arbitrary and unknown three-particle entangled state via three pairs non-maximally entangled states as the quantum channel.With the help of Bell-state measurements,an arbitrary three-particle state can be perfectly teleported if the receiver introduces a collective unitary transformation.In this scheme,the unitary transformation is given uniquely,which is not the same as others.Finally,a guantum logical circuit which can carry out the unitary transformation is given.

光太郎 上原

Ayman F. Abouraddy, Bahaa E. A. Saleh, Alexander V. Sergienko +1 more

We demonstrate that any pure bipartite state of two qubits may be decomposed into a superposition of a maximally entangled state and an orthogonal factorizable one. Although there are many such decompositions, the weights of the two superposed states are, remarkably, unique. We propose a measure of entanglement based on this decomposition. We also demonstrate that this measure is connected to three measures of entanglement previously set forth: maximal violation of Bell's inequality, concurrence, and two-particle visibility.

Xiao-Feng Fan, Tao Yang, Jian Li +2 more