Data/hora: 22/06/2024 17:27:18

Biblioteca(s): 	Embrapa Solos.	
Data corrente: 	20/03/2012	
Data da última atualização: 	19/03/2013	
Autoria: 	AUCCASIE, R.; MAZIERO, J.; CELERI, L. C.; SOARES-PINTO, D. O.; AZEVEDO, E. R.; BONAGAMBA, R. S.; SARTHOUR, R. S.; OLIVEIRA, I. S.; SERRA, R. M.	
Título: 	Experimentally witnessing the quantumness of correlations.	
Ano de publicação: 	2011	
Fonte/Imprenta: 	Physical Review Letters, v. 107, n. 7, p. 070501-070501-5, Aug. 2011.	
DOI: 	10.1103/PhysRevLett.107.070501	
Idioma: 	Português	
Conteúdo: 	The quantification of quantum correlations (other than entanglement) usually entails labored numerical optimization procedures also demanding quantum state tomographic methods. Thus it is interesting to have a laboratory friendly witness for the nature of correlations. In this Letter we report a direct experimental implementation of such a witness in a room temperature nuclear magnetic resonance system. In our experiment the nature of correlations is revealed by performing only few local magnetization measurements. We also compared the witness results with those for the symmetric quantum discord and we obtained a fairly good agreement.	
Palavras-Chave: 	Quantumness.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Solos (CNPS)	
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