Publications (5)
Optimal entanglement-assisted discrimination of quantum measurements
M. Mikova, M. Sedlak, I. Straka +5
We investigate optimal discrimination between two projective single-qubit measurements in a scenario where the measurement can be performed only once. We consider general setting i…
Incompatibility of unbiased qubit observables and Pauli channels
T. Heinosaari, D. Reitzner, T. Rybár +1
A quantum observable and a channel are considered compatible if they form parts of the same measurement device, otherwise they are incompatible. Constrains on compatibility between…
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 pr…
Divisibility of quantum dynamical maps and collision models
S. N. Filippov, J. Piilo, S. Maniscalco +1
Divisibility of dynamical maps is visualized by trajectories in the parameter space and analyzed within the framework of collision models. We introduce ultimate completely positive…
Bipartite entanglement-annihilating maps: necessary and sufficient conditions
S. N. Filippov, M. Ziman
We fully characterize bipartite entanglement-annihilating (EA) channels that destroy entanglement of any state shared by subsystems and, thus, should be avoided in any entanglement…