36 citations · 83 across the 10 of their papers we have counts for
10 papers
The relation between tangle and local unitary invariants for pure three and four-qubit states
Xin-wei Zha, Yun-Guang Zhang, Jian-Xia Qi +1
A new form of local unitary (LU) transformation invariant is given for multi-qubit states . The general relation between tangle and the LU transformation invariant of pure three an…
Channel matrix, measurement matrix and collapsed matrix in teleportation
Xin-Wei Zha, Jian-Xia Qi, Hai-Yang Song
In this paper, two kinds of coefficient matrixes (channel matrix, measurement matrix)associated with the pure state for teleportation are presented, the general relation among chan…
Simple forms of SLOCC equivalent four-qubit \c{hi} state
Xin-Wei Zha, Jian-Xia Qi, Yun-Guang Zhang
Some simple structure of maximally four-qubit state is presented. Using stochastic local operations and classical communication (SLOCC) invariants, it is can be shown those simple…
A genuine maximally seven-qubit entangled state
Xin-Wei Zha, Hai-Yang Song, Jian-Xia Qi +2
Contrary to A.Borras et al.'s [1] conjecture, a genuine maximally seven-qubit entangled state is presented. We find a seven-qubit state whose marginal density matrices for subsyste…
The criterion for maximally entangled four-qubit state
Xin-wei Zha, Hai-yang Song, Feng Feng
Paolo Facchi et al.[Phys. Rev. A. 77, 060304(R) (2009)] presented a maximally multipartite entangled state(MMES). Here we give the criterion for four-qubit state.and some new chara…
Bidirectional swapping quantum controlled teleportation based on maximally entangled five-qubit state
Zha Xin-Wei, Song Hai-Yang, Ma Gang-Long
A theoretical scheme for bidirectional swapping quantum controlled teleportation is presented using the entanglement property of maximally entangled five-qubit state, i.e., Alice w…