869 citations · 10.9k across the 170 of their papers we have counts for
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Quantum Cloning and Distributed Measurements
Dagmar Bruss, John Calsamiglia, Norbert Lütkenhaus
We study measurements on various subsystems of the output of a universal 1 to 2 cloning machine, and establish a correspondence between these measurements at the output and effecti…
Realistic teleportation with linear optical elements
C. Trump, D. Bruss, M. Lewenstein
We calculate the highest possible information gain in a measurement of entangled states when employing a beamsplitter. The result is used to evaluate the fidelity, averaged over al…
Approximate quantum cloning and the impossibility of superluminal information transfer
D. Bruss, G. M. D'Ariano, C. Macchiavello +1
We show that nonlocality of quantum mechanics cannot lead to superluminal transmission of information, even if most general local operations are allowed, as long as they are linear…
Schmidt number witnesses and bound entanglement
Anna Sanpera, Dagmar Bruss, Maciej Lewenstein
The Schmidt number of a mixed state characterizes the minimum Schmidt rank of the pure states needed to construct it. We investigate the Schmidt number of an arbitrary mixed state…
Separability and distillability in composite quantum systems -a primer-
M. Lewenstein, D. Bruss, J. I. Cirac +5
Quantum mechanics is already 100 years old, but remains alive and full of challenging open problems. On one hand, the problems encountered at the frontiers of modern theoretical ph…