33 citations · 177 across the 34 of their papers we have counts for
4 papers · 1 filter
Entanglement of graph states up to 8 qubits
Xiao-yu Chen
The entanglement of graph states up to eight qubits is calculated in the regime of iteration calculation. The entanglement measures could be the relative entropy of entanglement, t…
The coherent information of Pauli channels with coded inputs
Xiao-yu Chen, Li-zhen Jiang
The calculating of the coherent information is a fundamental step in obtaining the quantum capacity of a quantum channel. We introduce orthogonal and complete code basis to evaluat…
The entanglement of some non-two-colorable graph states
Xiao-yu Chen, Li-zhen Jiang
We exactly evaluate the entanglement of a six vertex and a nine vertex graph states which correspond to non ''two-colorable'' graphs. The upper bound of entanglement for five verti…
Perturbation theory of von Neumann Entropy
Xiao-yu Chen
In quantum information theory, von Neumann entropy plays an important role. The entropies can be obtained analytically only for a few states. In continuous variable system, even ev…