13 citations · 19 across the 2 of their papers we have counts for
2 papers
math-ph2008★ 6 cited
Complementarity and the algebraic structure of 4-level quantum systems
D. Petz, A. Szanto, M. Weiner
The history of complementary observables and mutual unbiased bases is reviewed. A characterization is given in terms of conditional entropy of subalgebras. The concept of complemen…
quant-ph2006★ 13 cited
State tomography for two qubits using reduced densities
D. Petz, K. M. Hangos, A. Szanto +1
The optimal state determination (or tomography) is studied for a composite system of two qubits when measurements can be performed on one of the qubits and interactions of the two…