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以不同的多极量子数和初态,我们用约化的线性熵研究CH(CH3)3 的耦合CH伸缩和弯曲振动的动力学纠缠,结果表明:在多极量子数大于等于3时,态|0,2N>的最大纠缠能在较短的时间内得到;态|N,0>的纠缠振荡频率比态|0,2N>的要小,而振荡的幅度要大. 相似文献
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The dynamical entanglement for Fermi coupled C--H stretch and bend
vibrations in molecule CHD3 is studied in terms of two
negativities and the reduced von Neumann entropy, where initial
states are taken to be direct products of photon-added coherent
states on each mode. It is demonstrated that the negativity defined
by the sum of negative eigenvalues of the partial transpose of
density matrices is positively correlated with the von Neumann
entropy. The entanglement difference between photon-added coherent
states and usual coherent states is discussed as well. 相似文献
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An algebraic Hamiltonian for the two coupled nonlinear vibrations of highly excited nonrigid molecule HCP was presented. The Hamiltonian reduces to the conventional one in a limit which was expressed in terms of harmonic oscillator operators. It showed that the algebraic model can better reproduce the data than the conventional model by fitting the observed data of HCP. 相似文献
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