Kraus representation for the density operator of a qubit.

Authors :: Tong, D.
Chen, J.
Huang, J.
Kwek, L.
Oh, C.
Source :: Laser Physics; Nov2006, Vol. 16 Issue 11, p1512-1516, 5p
Publication Year :: 2006
Abstract: We show that the time evolution of the density operator of a qubit can always be described in terms of the Kraus representation. A general scheme on how to construct the Kraus operators for an open qubit system is proposed, which can be generalized to open higher dimensional quantum systems. [ABSTRACT FROM AUTHOR]