15 citations · 81 across the 14 of their papers we have counts for
Showing 2011Show all
2 papers · 1 filter
quant-ph2011★ 6 cited
Constructing all entanglement witnesses from density matrices
Bang-Hai Wang, Dong-Yang Long
We demonstrate a general procedure to construct entanglement witnesses for any entangled state. This procedure is based on the trace inequality and a general form of entanglement w…
quant-ph2011★ 15 cited
Structural physical approximations and entanglement witnesses
Bang-Hai Wang, Dong-Yang Long
The structural physical approximation (SPA) to a positive map is considered to be one of the most important method to detect entanglement in the real physical world. We first show…