Complex quantum networks as structured environments: engineering and probing

: Nokkala J, Galve F, Zambrini R, Maniscalco S, Piilo J

Publisher: NATURE PUBLISHING GROUP

: 2016

: Scientific Reports

: SCIENTIFIC REPORTS

: SCI REP-UK

: ARTN 26861

: 6

: 7

: 2045-2322

DOI: https://doi.org/10.1038/srep26861(external)

We consider structured environments modeled by bosonic quantum networks and investigate the probing of their spectral density, structure, and topology. We demonstrate how to engineer a desired spectral density by changing the network structure. Our results show that the spectral density can be very accurately detected via a locally immersed quantum probe for virtually any network configuration. Moreover, we show how the entire network structure can be reconstructed by using a single quantum probe. We illustrate our findings presenting examples of spectral densities and topology probing for networks of genuine complexity.

srep26861.pdf