1208.0879 (Yao-Kun Wang et al.)

Quantum Deficit and Geometry for a Class of Two-qubit States    [PDF]

Yao-Kun Wang, Teng Ma, Bo Li, Zhi-Xi Wang

We evaluate the deficit of the Bell-diagonal states and a class of two-qubit states and give the geometry of those deficit. The dynamic behavior of quantum deficit under decoherence is investigated and it is shown that the deficit of some classes of $X$ states is more robust against the decoherence than the entanglement.

View original: http://arxiv.org/abs/1208.0879