219 citations · 280 across the 6 of their papers we have counts for
6 papers
How state preparation can affect a quantum experiment: Quantum process tomography for open systems
Aik-meng Kuah, Kavan Modi, César A. Rodríguez-Rosario +1
We study the effects of preparation of input states in a quantum tomography experiment. We show that maps arising from a quantum process tomography experiment (called process maps)…
Completely Positive Maps and Classical Correlations
César A. Rodríguez-Rosario, Kavan Modi, Aik-meng Kuah +2
We expand the set of initial states of a system and its environment that are known to guarantee completely positive reduced dynamics for the system when the combined state evolves…
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…