The work deficit, as introduced by Jonathan Oppenheim et al. [Phys. Rev. Left. 89 （2002） 180402] is a good measure of the quantum correlations in a state and provides a new standpoint for understanding quantum non-l...The work deficit, as introduced by Jonathan Oppenheim et al. [Phys. Rev. Left. 89 （2002） 180402] is a good measure of the quantum correlations in a state and provides a new standpoint for understanding quantum non-locality. In this paper, we analytically evaluate the one-way information deficit （OWID） for the Bell-diagonai states and a class of two-qubit states and further give the geometry picture for OWID. The dynamic behavior of the OWID under decoherence channel is investigated and it is shown that the OWID of some classes of X states is more robust against the decoherence than the entanglement.展开更多
基金Supported by National Natural Science Foundation of China under Grant No.11101017Beijing Natural Science Foundation Program and Scientific Research Key Program of Beijing Municipal Commission of Education under Grant No.KZ201210028032Funding Project for Beijing Municipality under Grant No.201007107
文摘The work deficit, as introduced by Jonathan Oppenheim et al. [Phys. Rev. Left. 89 （2002） 180402] is a good measure of the quantum correlations in a state and provides a new standpoint for understanding quantum non-locality. In this paper, we analytically evaluate the one-way information deficit （OWID） for the Bell-diagonai states and a class of two-qubit states and further give the geometry picture for OWID. The dynamic behavior of the OWID under decoherence channel is investigated and it is shown that the OWID of some classes of X states is more robust against the decoherence than the entanglement.
