Complex quantum networks as structured environments: engineering and probing
Johannes Nokkala, Fernando Galve, Roberta Zambrini, Sabrina Maniscalco, Jyrki Piilo · Scientific Reports · 2016
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.