122 citations · 460 across the 10 of their papers we have counts for
8 papers · 1 filter
Approximate programmable quantum processors
Mark Hillery, Mario Ziman, Vladimir Buzek
A quantum processor is a programmable quantum circuit in which both the data and the program, which specifies the operation that is carried out on the data, are quantum states. We…
Quantum-state filtering applied to the discrimination of Boolean functions
Janos A. Bergou, Mark Hillery
Quantum state filtering is a variant of the unambiguous state discrimination problem: the states are grouped in sets and we want to determine to which particular set a given input…
Entanglement conditions for two-mode states
Mark Hillery, M. Suhail Zubairy
We provide a class of inequalities whose violation shows the presence of entanglement in two-mode systems. We initially consider observables that are quadratic in the mode creation…
Towards quantum-based privacy and voting
Mark Hillery, Mario Ziman, Vladimir Buzek +1
The privacy of communicating participants is often of paramount importance, but in some situations it is an essential condition. A typical example is a fair (secret) voting. We ana…
A universal programmable quantum state discriminator that is optimal for unambiguously distinguishing between unknown states
Janos Bergou, Mark Hillery
We construct a device that can unambiguously discriminate between two unknown quantum states. The unknown states are provided as inputs, or programs, for the program registers and…
Optimal unambiguous filtering of a quantum state: An instance in mixed state discrimination
Janos Bergou, Ulrike Herzog, Mark Hillery
Deterministic discrimination of nonorthogonal states is forbidden by quantum measurement theory. However, if we do not want to succeed all the time, i.e. allow for inconclusive out…