Influence of the ion wake-field on the collisional entanglement fidelity in complex dusty plasmas

The ion wake-field effects on the entanglement fidelity for the elastic electron-dust grain collisions are investigated in complex dusty plasmas. The screened effective potential and partial wave analysis are employed to obtain the entanglement fidelity in dusty plasmas as a function of the Mach number, Debye length, and collision energy. It is shown that the ion wake-field effect suppresses the entanglement fidelity in dusty plasmas. It is also found that the ion wake-field effect on the entanglement fidelity decreases with an increase of the collision energy. (C) 2012 American Institute of Physics. [http://dx.doi.org.access.hanyang.ac.kr/10.1063/1.3691942]One of the authors (Y.-D.J.) gratefully acknowledges Dr. M. Rosenberg and Professor J. Allen for useful discussions on dusty plasmas. One of the authors (Y.-D.J.) also gratefully acknowledges Professor W. Roberge for enlightening discussions and warm hospitality while visiting the Department of Physics, Applied Physics, and Astronomy at Rensselaer Polytechnic Institute. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant No. 2011-0003099)