Typicality of Heisenberg scaling precision in multimode quantum metrology

We propose a measurement setup reaching Heisenberg scaling precision for the estimation of any distributed parameter φ (not necessarily a phase) encoded into a generic M-port linear network composed only of passive elements. The scheme proposed can be easily implemented from an experimental point of...

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Bibliographic Details
Main Authors: Giovanni Gramegna, Danilo Triggiani, Paolo Facchi, Frank A. Narducci, Vincenzo Tamma
Format: Article
Language:English
Published: American Physical Society 2021-02-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.3.013152