1 citations · 2 across the 4 of their papers we have counts for
5 papers
Limits and restrictions of private quantum channel
Jan Bouda, Mario Ziman
We study private quantum channels on a single qubit, which encrypt given set of plaintext states . Specifically, we determine all achievable states (average output of…
Description of quantum dynamics of open systems based on collision-like models
Mario Ziman, Peter Stelmachovic, Vladimir Buzek
Master equations in the Lindblad form describe evolution of open quantum systems that is completely positive and simultaneously has a semigroup property. We analyze a possibility t…
Quantum theory: kinematics, linearity and no-signaling condition
Mario Ziman, Peter Stelmachovic
We show that the linearity of an evolution of Quantum Mechanics follows from the definition of kinematics. The same result is obtained for an arbitrary theory with the state space…
Role of entanglement and correlations in dense coding
Mario Ziman, Vladimir Buzek
Usually it is assumed that quantum dense coding is due to quantum entanglement between two parties. We show that this phenomenon has its origin in {\em correlations} between two pa…
Quantum homogenization
M. Ziman, P. Stelmachovic, V. Buzek +3
We design a universal quantum homogenizer, which is a quantum machine that takes as an input a system qubit initially in the state and a set of N reservoir qubits initially pre…