TY - JOUR T1 - Dynamics of Bipartite Vibrational Entanglement under the Inherent Decoherence Process in $H_2O$ AU - Cheng , Yuanyuan AU - Zhai , Liangjun JO - Journal of Atomic and Molecular Sciences VL - 4 SP - 213 EP - 224 PY - 2016 DA - 2016/07 SN - 7 DO - http://doi.org/10.4208/jams.061616.081016a UR - https://global-sci.org/intro/article_detail/jams/8174.html KW - bipartite vibrational entanglement KW - inherent decoherence process KW - Lie algebraic method for molecular vibration AB -

In present study, the dynamics of stretching-stretching and stretching-bending entanglement in $H_2O$ are studied with considering the inherent decoherence process. It is shown that the excitation in the bending vibration can lead to the decrease of the generation rate of stretching-stretching entanglement for the non-superposed state and the degeneration of entanglement for the initial entangled states. For specific initial entangled states, the stretching-stretching entanglement can live for a long time, and the correspondence between energy transfer and entanglement is still maintained for the initial local mode states. For the stretching-bending vibrations, the stretching-bending entanglement is much lower than the stretching-stretching vibration, and the degeneration rate of stretching-bending entanglement is higher than that of the stretching-stretching entanglement. The excitation in the remaining stretching vibration can induce a higher degree of stretching-bending entanglement.