Comment on: Stochastic local operations and classical communication Invariant and the residual entanglement for n qubits

XinWei Zha, HaiYang Song, MingLiang Hu

In a recent paper [Phys. Rev. A 76, 032304(2007)], Li et al. proposed the definition of the residual entanglement for n qubits by means of the Stochastic local operations and class…