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Characterization of entangling properties of quantum measurement via two-mode quantum detector tomography using coherent state probes

Yokoyama, Shota; Pozza, Nicola Dalla; Serikawa, Takahiro; Kuntz, Katanya; Wheatley, T. A.; Dong, Daoyi; Huntington, Elanor; Yonezawa, Hidehiro


Entangled measurement is a crucial tool in quantum technology. We propose a new entanglement measure of multi-mode detection, which estimates the amount of entanglement that can be created in a measurement. To illustrate the proposed measure, we perform quantum tomography of a two-mode detector that is comprised of two superconducting nanowire single photon detectors. Our method utilizes coherent states as probe states, which can be easily prepared with accuracy. Our work shows that a separable...[Show more]

CollectionsANU Research Publications
Date published: 2019-11-11
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.27.034416
Access Rights: Open Access


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