Classical bifurcation in a quadrupolar NMR system

被引：24

作者：

Araujo-Ferreira, A. G. ^{[1
]}

Auccaise, R. ^{[2
]}

Sarthour, R. S. ^{[3
]}

Oliveira, I. S. ^{[3
]}

Bonagamba, T. J. ^{[1
]}

Roditi, I. ^{[3
]}

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Empresa Brasileira Pesquisa Agr, BR-22460000 Rio De Janeiro, RJ, Brazil

[3] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil

来源：

PHYSICAL REVIEW A | 2013年 / 87卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

QUANTUM DYNAMICS; MODEL;

D O I：

10.1103/PhysRevA.87.053605

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The Josephson junction model is applied to the experimental implementation of classical bifurcation in a quadrupolar nuclear magnetic resonance system. There are two regimes, one linear and one nonlinear, which are implemented by the radio-frequency and the quadrupolar terms of the Hamiltonian of a spin system, respectively. These terms provide an explanation of the symmetry breaking due to bifurcation. Bifurcation depends on the coexistence of both regimes at the same time in different proportions. The experiment is performed on a lyotropic liquid crystal sample of an ordered ensemble of Cs-133 nuclei with spin I = 7/2 at room temperature. Our experimental results confirm that bifurcation happens independently of the spin value and of the physical system. With this experimental spin scenario, we confirm that a quadrupolar nuclei system could be described analogously to a symmetric two-mode Bose-Einstein condensate.

引用

页数：5

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