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	Author	Barral, D.; Isoard, M.; Sorelli, G.; Gessner, M.; Treps, N.; Walschaers, M.
	Title	Metrological detection of entanglement generated by non-Gaussian operations			Type	Journal Article
	Year	2024	Publication	New Journal of Physics	Abbreviated Journal	New J. Phys.
	Volume	26	Issue	8	Pages	083012 - 20pp
	Keywords	entanglement; Fisher information; non-Gaussian; continuous variables; metrology; homodyne detection
	Abstract	Entanglement and non-Gaussianity are physical resources that are essential for a large number of quantum-optics protocols. Non-Gaussian entanglement is indispensable for quantum-computing advantage and outperforms its Gaussian counterparts in a number of quantum-information protocols. The characterization of non-Gaussian entanglement is a critical matter as it is in general highly demanding in terms of resources. We propose a simple protocol based on the Fisher information for witnessing entanglement in an important class of non-Gaussian entangled states: photon-subtracted states. We demonstrate that our protocol is relevant for the detection of non-Gaussian entanglement generated by multiple photon-subtraction and that it is experimentally feasible through homodyne detection.
	Address	[Barral, David; Isoard, Mathieu; Sorelli, Giacomo; Treps, Nicolas; Walschaers, Mattia] Sorbonne Univ, ENS Univ PSL, CNRS, Lab Kastler Brossel,Coll France, 4 Pl Jussieu, F-75252 Paris, France, Email: david.barral@lkb.ens.fr;
	Corporate Author				Thesis
	Publisher	IOP Publishing Ltd	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1367-2630	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:001288948500001			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	6228
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