Beschreibung
Causality is central to understanding the mechanisms of nature: some event "A" is the cause of another event B. Surprisingly, causality does not follow this simple rule in quantum physics: due to to quantum superposition we might be led to believe that "A causes B and that "B causes A. This idea is not only important to the foundations of physics but also leads to practical advantages: a quantum circuit with such indefinite causality performs computationally better than one with definite causality. This thesis provides one of the first comprehensive introductions to quantum causality, and presents a number of advances. It provides an extension and generalization of a framework that enables us to study causality within quantum mechanics, thereby setting the stage for the rest of the work. This comprises: mathematical tools to define causality in terms of probabilities; computational tools to prove indefinite causality in an experiment; means to experimentally test particular causal structures; and finally an algorithm that detects the exact causal structure in an quantum experiment.
Autorenporträt
Dr Giarmatzi obtained her Physics degree from Aristotle University of Thessaloniki, in Greece. After a short visit to rainy Paris for her Masters, and cloudy Brussels for an attempt at a PhD, she settled in sunny Brisbane, at The University of Queensland, for her PhD. Right after the thesis submission she remained at UQ, as a PostDoctoral Research Fellow until present. Having explored different theoretical aspects of quantum causality, now her interests lay in exploiting them to aid quantum technologies.
Herstellerkennzeichnung:
Springer Verlag GmbH
Tiergartenstr. 17
69121 Heidelberg
DE
E-Mail: juergen.hartmann@springer.com
