55 citations · 264 across the 28 of their papers we have counts for
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quant-ph2015★ 17 cited
Optimal parameter estimation of Pauli channels
László Ruppert, Dániel Virosztek, Katalin Hangos
The optimal measurement configuration, i.e., the optimal input quantum state and measurement in the form of a POVM with two elements, is investigated in this paper for qubit and ge…
math.FA2015★ 13 cited
Maps on positive definite matrices preserving Bregman and Jensen divergences
Lajos Molnár, József Pitrik, Dániel Virosztek
In this paper we determine those bijective maps of the set of all positive definite complex matrices which preserve a given Bregman divergence corresponding to a differ…
math.FA2015★ 8 cited
Continuous Jordan triple endomorphisms of
Lajos Molnár, Dániel Virosztek
We describe the structure of all continuous Jordan triple endomorphisms of the set of all positive definite matrices thus completing a recent result of o…