In this paper the dynamical entanglements of anharmonic vibrations in the linear triatomic molecules are researched by the Lie algebraic approach. The linear entropy and the Von Neumann entropy are analytically obtained for both initial Fock states and coherent states. The dynamical properties of entanglement in molecules HCN and DCN are discussed.

Acta Physica SinicaJan 1, 20104 citations

Chemical Physics Letters

Entanglement of vibrational modes in triatomic molecules

Xi-Wen Hou, Ming-Fang Wan, Zhong-Qi Ma

Published Jun 16, 2006• 15 citations

Publisher

DOI: 10.1016/j.cplett.2006.06.018

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The intramolecular energy transfer, dynamical entanglement of vibrations, and decoherence process in triatomic molecular systems are studied. The benchmark molecules of

{\mathrm{H}}_{2}\mathrm{S}

{\mathrm{NO}}_{2}

, and

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are sampled to investigate the intramolecular energy transfer and dynamical entanglement of stretching-stretching vibrational modes in triatomic molecular systems by restricting the bending vibration to its ground state. The comparative study is applied to explore the dynamical differences of initial local-mode and normal-mode characteristic states. Also, the decoherence process of the stretching-stretching qubits system caused by the bending vibration is discussed.