7 citations · 12 across the 4 of their papers we have counts for
4 papers · 1 filter
Schmidt states and positivity of linear maps
Aik-meng Kuah, E. C. G. Sudarshan
Using pure entangled Schmidt states, we show that m-positivity of a map is bounded by the ranks of its negative Kraus matrices. We also give an algebraic condition for a map to be…
Extension maps
Aik-meng Kuah, E. C. G. Sudarshan
We define extension maps as maps that extend a system (through adding ancillary systems) without changing the state in the original system. We show, using extension maps, why a com…
Manifold of density matrices
Aik-meng Kuah, E. C. G. Sudarshan
We show that the manifold of density matrices can be derived from CP^{N^2-1} by the action of SU(N). We give some preliminary observations on the structure of this manifold.
Dynamical maps and measurements
Aik-meng Kuah, E. C. G. Sudarshan
We show how a set of POVMs, expressed as a set of linear maps, can be performed with a unitary transformation followed by a von-Neumann measurement with an ancillary system of…