Kraus representation of quantum evolution and fidelity as manifestations of Markovian and non-Markovian avataras
Krawtchouk matrices from classical and quantum random walks
Krawtchouk polynomials and Krawtchouk matrices
Krein-Space Formulation of PT-Symmetry, CPT-Inner Products, and Pseudo-Hermiticity
Kronecker product/Direct product/Tensor product in Quantum Information theory
Kullback-Leibler quantum divergence as an indicator of quantum chaos