35 citations · 35 across the 1 of their papers we have counts for
6 papers
Unconditional privacy over channels which cannot convey quantum information
Karol Horodecki, Michal Horodecki, Pawel Horodecki +2
By sending systems in specially prepared quantum states, two parties can communicate without an eavesdropper being able to listen. The technique, called quantum cryptography, enabl…
Are quantum correlations symmetric ?
Karol Horodecki, Michal Horodecki, Pawel Horodecki
To our knowledge, all known bipartite entanglement measures are symmetric under exchange of subsystems. We ask if an entanglement measure that is not symmetric can exist. A related…
Quantumness of ensemble from no-broadcasting principle
M. Horodecki, P. Horodecki, R. Horodecki +1
Quantum information, though not precisely defined, is a fundamental concept of quantum information theory which predicts many fascinating phenomena and provides new physical resour…
Locking entanglement measures with a single qubit
Karol Horodecki, Michal Horodecki, Pawel Horodecki +1
We study the loss of entanglement of bipartite state subjected to discarding or measurement of one qubit. Examining the behavior of different entanglement measures, we find that en…
Secure key from bound entanglement
Karol Horodecki, Michal Horodecki, Pawel Horodecki +1
We characterize the set of shared quantum states which contain a cryptographically private key. This allows us to recast the theory of privacy as a paradigm closely related to that…
General Entanglement Breaking Channels
Michael Horodecki, Peter W. Shor, Mary Beth Ruskai
This paper studies the class of stochastic maps, or channels, whose action (when tensored with the identity) on an entangled state always yields a separable state. Such maps have a…