Quantum nonlocality and entanglement for a two-mode squeezed vacuum state in a phase damping channel
Lu Huai-Xin · Chinese Journal of Quantum Electronics · 2005
We study dynamics of quantum nonlocality and entanglement for a two-mode squeezed vacuum state in a phase damping channel. After getting the explicit expression of the density evolution operator of the system, we uncover the nonlocality of the state by introducing appropriate Bell operator based on the 'pseudospin operator'. The property of the entanglement for the state is also clear from the calculation of relative entropy of entanglement.