Dynamical entanglement for Fermi coupled stretching and bending modes |
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| Authors: | Hou Xi-Wen and Cheng Chuan-Ming |
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| Affiliation: | Department of Physics, Huazhong Normal University, Wuhan 430079, China; Department of Physics and Electronic Engineering, Yunyang Teachers' College, Danjiangkou 442700, China |
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| Abstract: | 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. |
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| Keywords: | vibrational analysis quantum
entanglement |
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