Reference : Multiqubit symmetric states with a high geometric entanglement

	Document type :	Scientific congresses and symposiums : Poster
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/91893

Title :	Multiqubit symmetric states with a high geometric entanglement
Language :	English
Author, co-author :	Martin, John [Université de Liège - ULg > Département de physique > Optique quantique >]
	Giraud, Olivier [ > > ]
	Braun, Peter [ > > ]
	Braun, Daniel [ > > ]
	Bastin, Thierry [Université de Liège - ULg > Département de physique > Spectroscopie atomique et Physique des atomes froids >]
Publication date :	25-May-2011
Audience :	National
Event name :	Réunion annuelle de la Société Belge de Physique
Event place (city) :	Namur
Event country :	Belgique
Abstract :	[en] We propose a detailed study of the geometric entanglement properties of pure symmetric N-qubit states, focusing more particularly on the identification of symmetric states with a high geometric entanglement and how their entanglement behaves asymptotically for large N. We show that much higher geometric entanglement with improved asymptotical behavior can be obtained in comparison with the highly entangled balanced Dicke states studied previously. We also derive an upper bound for the geometric measure of entanglement of symmetric states. The connection with the quantumness of a state is discussed.
Permalink :	http://hdl.handle.net/2268/91893

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