251 citations · 511 across the 4 of their papers we have counts for
4 papers
Optimal Quantum Clocks
V. Buzek, R. Derka, S. Massar
A quantum clock must satisfy two basic constraints. The first is a bound on the time resolution of the clock given by the difference between its maximum and minimum energy eigenval…
Quantum State Reconstruction From Incomplete Data
V. Buzek, G. Drobny, R. Derka +2
Knowing and guessing, these are two essential epistemological pillars in the theory of quantum-mechanical measurement. As formulated quantum mechanics is a statistical theory. In g…
Universal Algorithm for Optimal Estimation of Quantum States from Finite Ensembles
Radoslav Derka, Vladimir Buzek, Artur Ekert
We present a universal algorithm for the optimal quantum state estimation of an arbitrary finite dimensional system. The algorithm specifies a physically realizable positive operat…
Reconstruction of quantum states of spin systems via the Jaynes principle of maximum entropy
V. Buzek, G. Drobny, G. Adam +2
We apply the Jaynes principle of maximum entropy for the partial reconstruction of correlated spin states. We determine the minimum set of observables which are necessary for the c…