8 citations · 17 across the 9 of their papers we have counts for
3 papers · 1 filter
Counterexamples to the fractional coloring conjecture for triply efficient shadow tomography
Jędrzej Stempin, Santiago Llorens, Felix Huber
Fractional graph colorings are useful for the Shadow tomography of Pauli observables. In practice, it is desirable that any experimentally interesting set of Pauli operators has a…
Combining moment matrices, symmetric extension, and Lovász theta: is entangled
Jȩdrzej Stempin, Gerard Anglès Munné, Santiago Llorens +1
We solve an open problem in entanglement theory posed by Yu et al., {\it Nature Communications 12, 1012 (2021)}. The problem is to show, via an entanglement witness, that the -…
Exact identification of unknown unitary processes
Santiago Llorens, Arnau Diebra, Michal Sedlák +1
The accurate identification of faulty hardware is a fundamental requirement for reliable quantum information processing. We address this problem in a quantum setting, where a serie…