A1 Refereed original research article in a scientific journal
Local probe for connectivity and coupling strength in quantum complex networks
Authors: Nokkala J, Maniscalco S, Piilo J
Publisher: NATURE PUBLISHING GROUP
Publication year: 2018
Journal: Scientific Reports
Journal name in source: SCIENTIFIC REPORTS
Journal acronym: SCI REP-UK
Article number: ARTN 13010
Volume: 8
Number of pages: 8
ISSN: 2045-2322
eISSN: 2045-2322
DOI: https://doi.org/10.1038/s41598-018-30863-2
Web address : https://www.nature.com/articles/s41598-018-30863-2
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/35662846
We develop a local probe to estimate the connectivity of complex quantum networks. Our results show how global properties of different classes of complex networks can be estimated - in quantitative manner with high accuracy - by coupling a probe to a single node of the network. Here, our interest is focused on probing the connectivity, i.e. the degree sequence, and the value of the coupling constant within the complex network. The scheme combines results on classical graph theory with the ability to develop quantum probes for networks of quantum harmonic oscillators. Whilst our results are proof-of-principle type, within the emerging field of quantum complex networks they may have potential applications for example to the efficient transfer of quantum information or energy or possibly to shed light on the connection between network structure and dynamics.
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