35 citations · 36 across the 2 of their papers we have counts for
8 papers · 1 filter
When non i.i.d. information sources can be communicationally useful?
Marcin Pawlowski, Karol Horodecki, Pawel Horodecki +1
Information sources used for communication purposes usually are assumed to be i.i.d. type, especially as far as entanglement or nonlocality properties are concerned. Here we propos…
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…
Quantum key distribution based on arbitrarily-weak distillable entangled states
Karol Horodecki, Debbie Leung, Hoi-Kwong Lo +1
States with private correlations but little or no distillable entanglement were recently reported. Here, we consider the secure distribution of such states, i.e., the situation whe…
Low dimensional bound entanglement with one-way distillable cryptographic key
Karol Horodecki, Lukasz Pankowski, Michal Horodecki +1
We provide a class of bound entangled states that have positive distillable secure key rate. The smallest state of this kind is , which shows that peculiar security co…
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…