34 citations · 151 across the 29 of their papers we have counts for
Showing 2010 · quant-phShow all
2 papers · 2 filters
quant-ph2010
Detecting entanglement of states by entries of their density matrices
Xiaofei Qi, Jinchuan Hou
For any bipartite systems, a universal entanglement witness of rank-4 for pure states is obtained and a class of finite rank entanglement witnesses is constructed. In addition, a m…
quant-ph2010★ 34 cited
Positive finite rank elementary operators and characterizing entanglement of states
Xiaofei Qi, Jinchuan Hou
In this paper, a class of indecomposable positive finite rank elementary operators of order are constructed. This allows us to give a simple necessary and sufficient criter…