53 citations · 215 across the 29 of their papers we have counts for
10 papers · 1 filter
Characterization of PPT states and measures of entanglement
W. A. Majewski, T. Matsuoka, M. Ohya
A detailed characterization of PPT states, both in the Heisenberg and in the Schrödinger picture, is given. Measures of entanglement are defined and discussed in details. Illustrat…
On a characterization of PPT states
W. A. Majewski
We present two different descriptions of positive partially transposed (PPT) states. One is based on the theory of positive maps while the second description provides a characteriz…
On non-completely positive quantum dynamical maps on spin chains
W. A. Majewski
The new arguments based on Majorana fermions indicating that non-completely positive maps can describe open quantum evolution are presented.
On positive decomposable maps
Wladyslaw A. Majewski, Marcin Marciniak
The new paper will be submitted.
On quantum Lyapunov exponents
Wladyslaw A. Majewski, Marcin Marciniak
It was shown that quantum analysis constitutes the proper analytic basis for quantization of Lyapunov exponents in the Heisenberg picture. Differences among various quantizations o…
-decomposability of positive maps
Wladyslaw A. Majewski, Marcin Marciniak
The problem of classification of decomposable (in the sense of Stormer) positive maps between matrix algebras is presented. We propose the new notion of "finite" version of decompo…