Quantum information processing through nuclear magnetic resonance
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Redalyc
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Sociedade Brasileira de Física
2005
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| _version_ | 1876439466667671552 |
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| author | J. D. Bulnes |
| author_facet | J. D. Bulnes |
| contents | Quantum information processing through nuclear magnetic resonance J. D. Bulnes F. A. Bonk R. S. Sarthour E. R. de Azevedo J. C. C. Freitas T. J. Bonagamba I. S. Oliveira Física, Astronomía y Matemáticas We discuss the applications of Nuclear Magnetic Resonance (NMR) to quantum information processing, focusingon the use of quadrupole nuclei for quantum computing. Various examples of experimental implementationof logic gates are given and compared to calculated NMR spectra and their respective density matrices. Thetechnique of Quantum State Tomography for quadrupole nuclei is briefly described, and examples of measureddensity matrices in a two-qubit I = 3=2 spin system are shown. Experimental results of density matrices representingpseudo-Bell states are given, and an analysis of the entropy of theses states is made. Considering anNMR experiment as a depolarization quantum channel we calculate the entanglement fidelity and discuss thecriteria for entanglement in liquid state NMR quantum information. A brief discussion on the perspectives forNMR quantum computing is presented at the end. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435406 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.35 |
| format | Artículo científico |
| id | redalyc_46435406 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Quantum information processing through nuclear magnetic resonance J. D. Bulnes Física, Astronomía y Matemáticas Quantum information processing through nuclear magnetic resonance J. D. Bulnes F. A. Bonk R. S. Sarthour E. R. de Azevedo J. C. C. Freitas T. J. Bonagamba I. S. Oliveira Física, Astronomía y Matemáticas We discuss the applications of Nuclear Magnetic Resonance (NMR) to quantum information processing, focusingon the use of quadrupole nuclei for quantum computing. Various examples of experimental implementationof logic gates are given and compared to calculated NMR spectra and their respective density matrices. Thetechnique of Quantum State Tomography for quadrupole nuclei is briefly described, and examples of measureddensity matrices in a two-qubit I = 3=2 spin system are shown. Experimental results of density matrices representingpseudo-Bell states are given, and an analysis of the entropy of theses states is made. Considering anNMR experiment as a depolarization quantum channel we calculate the entanglement fidelity and discuss thecriteria for entanglement in liquid state NMR quantum information. A brief discussion on the perspectives forNMR quantum computing is presented at the end. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435406 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.35 |
| title | Quantum information processing through nuclear magnetic resonance |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46435406 |