56 citations · 81 across the 7 of their papers we have counts for
6 papers · 1 filter
From limits of quantum nonlinear operations to multicopy entanglement witnesses and state spectrum estimation
Pawel Horodecki
Limits of nonlinear in quantum mechanics are studied. Impossibility of physical implementation of the transformation in quantum mechanics is p…
Measuring quantum entanglement without prior state reconstruction
Pawel Horodecki
It is shown that, despite strong nonlinearity, entanglement of formation of two-qubit state can be measured without prior state reconstruction. Collective measurements on small num…
Mixed-state entanglement and quantum communication
Michal Horodecki, Pawel Horodecki, Ryszard Horodecki
We present basics of mixed-state entanglement theory. The first part of the article is devoted to mathematical characterizations of entangled states. In second part we discuss the…
Classical capacity of a noiseless quantum channel assisted by noisy entanglement
Michal Horodecki, Pawel Horodecki, Ryszard Horodecki +2
We derive the general formula for the capacity of a noiseless quantum channel assisted by an arbitrary amount of noisy entanglement. In this capacity formula, the ratio of the quan…
Bound entangled states with not positive partial transposition exist
Pawel Horodecki
The paper has been withdrawn by the author due to crucial error in formula (14) which does not satisfy conditions for S(x,y) domain if only d>2.
Bound entanglement for continuous variables is a rare phenomenon
Pawel Horodecki, J. Ignacio Cirac, Maciej Lewenstein
We discuss the notion of bound entanglement (BE) for continuous variables (CV). We show that the set of non--distillable states (NDS) for CV is nowhere dense in the set of all stat…