--- title: "Quantum State Tomography for Quadrupole Nuclei and its Applications on a Two-qubit System • CBPF Index" description: "CBPF INDEX es el sistema de seguimiento de la producción científica y tecnológica del CBPF. En él se puede obtener la lista de publicaciones de artículos, libros, informes técnicos, etc. de toda la comunidad del CBPF." canonical_url: "https://index.cbpf.br/es/publicacoes/6ad2a767639f62b11adbafcd" locale: es meta: "og:description": "CBPF INDEX es el sistema de seguimiento de la producción científica y tecnológica del CBPF. En él se puede obtener la lista de publicaciones de artículos, libros, informes técnicos, etc. de toda la comunidad del CBPF." "og:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_Quantum%2BState%2BTomography%2Bfor%2BQuadrupole%2BNuclei%2Band%2Bits%2BApplications%2Bon%2Ba%2BTwo-qubit%2BSystem%2Ctipo_~Tm90YSBkZSBGw61zaWNh%2Ccor_~I2E4MmMwMA%2Cautores_~Ri4gQS4gQm9uazsgUi4gUy4gU2FydGhvdXI7IEUuIFIuIGRlIEF6ZXZlZG87IEp1YW4gSm9zw6kgRMOtYXogQnVsbmVzOyBHLiBMLiBNYW50b3Zhbmk7IEouIEMuIEMuIEZyZWl0YXM7IFRpdG8gSi4gQm9uYWdhbWJhOyBBLiBQLiBHdWltYXLDo2VzOyBJLiBTLiBPbGl2ZWlyYQ%2Cdetalhe_2004%2Csecao_Publicaciones%2Cp_Ii9lcy9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmFmY2Qi%2Cs_ZPvhJ5PXojP6CMGx.png" "og:image:height": "600" "og:image:type": image/png "og:image:width": "1200" "og:title": "Quantum State Tomography for Quadrupole Nuclei and its Applications on a Two-qubit System • CBPF Index" "twitter:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_Quantum%2BState%2BTomography%2Bfor%2BQuadrupole%2BNuclei%2Band%2Bits%2BApplications%2Bon%2Ba%2BTwo-qubit%2BSystem%2Ctipo_~Tm90YSBkZSBGw61zaWNh%2Ccor_~I2E4MmMwMA%2Cautores_~Ri4gQS4gQm9uazsgUi4gUy4gU2FydGhvdXI7IEUuIFIuIGRlIEF6ZXZlZG87IEp1YW4gSm9zw6kgRMOtYXogQnVsbmVzOyBHLiBMLiBNYW50b3Zhbmk7IEouIEMuIEMuIEZyZWl0YXM7IFRpdG8gSi4gQm9uYWdhbWJhOyBBLiBQLiBHdWltYXLDo2VzOyBJLiBTLiBPbGl2ZWlyYQ%2Cdetalhe_2004%2Csecao_Publicaciones%2Cp_Ii9lcy9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmFmY2Qi%2Cs_ZPvhJ5PXojP6CMGx.png" --- > Index of every page on this site: [llms.txt](https://index.cbpf.br/llms.txt) **Nota de Física****Publicado** # **Quantum State Tomography for Quadrupole Nuclei and its Applications on a Two-qubit System** **F. A. Bonk; R. S. Sarthour; E. R. de Azevedo; Juan José Díaz Bulnes; G. L. Mantovani; J. C. C. Freitas; Tito J. Bonagamba; A. P. Guimarães; I. S. Oliveira** 2004 [**Descargar PDF **0,5 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbafcd/pdf) [**Contactar al responsable**](mailto:apub@cbpf.br?subject=Quantum%20State%20Tomography%20for%20Quadrupole%20Nuclei%20and%20its%20Applications%20on%20a%20Two-qubit%20System) ## **Datos de la publicación**
Autores
F. A. Bonk; R. S. Sarthour; E. R. de Azevedo; Juan José Díaz Bulnes; G. L. Mantovani; J. C. C. Freitas; Tito J. Bonagamba; A. P. Guimarães; I. S. Oliveira
Tipo
Nota de Física
Estado
Publicado
Fecha de publicación
2004
Descripción
A method for performing quantum state tomography for quadrupole nuclei is presented in this paper. First, it is shown that upon appropriate phase cycling, the NMR intensities of quadrupole nuclei depend only on diagonal elements of the density matrix. Thus, a method for obtaining the density matrix elements, which consists of dragging off-diagonal elements into the main diagonal using fine phase-controlled selective radiofrequency pulses, was derived. The use of the method is exemplified through 23Na NMR (nuclear spin I = 3/2) in a lyotropic liquid-crystal at room temperature, in three applications: (a) the tomography of pseudo-pure states; (b) the tomography of the quadrupole free evolution of the density matrix, and (c) the unitary state evolution of each qubit in the system over the Bloch sphere upon the application of a Hadamard gate. Further applications in the context of pure NMR and in the context of quantum information processing, as well as generalizations for higher spins, are discussed.
Año
2004
Número
CBPF-NF-011/04
Vínculo con tesis
No
Vínculo con beca
No
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