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Linking measures for macroscopic quantum states via photon-spin mapping

Froewis, F. and Sangouard, N. and Gisin, N.. (2015) Linking measures for macroscopic quantum states via photon-spin mapping. Optics communications, Vol. 337. pp. 2-11.

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Official URL: http://edoc.unibas.ch/dok/A6348404

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Abstract

We review and compare several measures that identify quantum states that are ``macroscopically quantum``. These measures were initially formulated either for photonic systems or for spin ensembles. Here, we compare them through a simple model which maps photonic states to spin ensembles. On one hand, we reveal problems for some spin measures to handle correctly photonic states that typically are considered to be macroscopically quantum. On the other hand, we find significant similarities between other measures even though they were differently motivated. (C) 2014 Elsevier B.V. All rights reserved.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Quantum Physics (Sangouard)
UniBasel Contributors:Sangouard, Nicolas
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Elsevier
ISSN:0030-4018
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:10 Apr 2015 09:12
Deposited On:10 Apr 2015 09:12

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