Eur. Phys. J. Plus (2017) 132: 442
https://doi.org/10.1140/epjp/i2017-11720-5

Regular Article

Collisional entanglement fidelities in quantum plasmas including strong quantum recoil and oscillation effects

¹ Department of Physics, Hanyang University, 04763, Seoul, South Korea
² Research Institute for Natural Sciences, Hanyang University, 04763, Seoul, South Korea
³ Department of Applied Physics and Department of Bionanotechnology, Hanyang University, Ansan, 15588, Kyunggi-Do, South Korea

^* e-mail: ydjung@hanyang.ac.kr

Received: 2 June 2017
Accepted: 21 September 2017
Published online: 27 October 2017

Abstract

The quantum recoil and oscillation effects on the entanglement fidelity and the electron-exchange function for the electron-ion collision are investigated in a semiconductor plasma by using the partial wave analysis and effective interaction potential in strong quantum recoil regime. The magnitude of the electron-exchange function is found to increase as the collision energy increases, but it decreases with an increase in the exchange parameter. It is also found that the collisional entanglement fidelity in strong quantum recoil plasmas is enhanced by the quantum-mechanical and shielding effects. The collisional entanglement fidelity in a semiconductor plasma is also enhanced by the collective plasmon oscillation and electron-exchange effect. However, the electron-exchange effect on the fidelity ratio function is reduced as the plasmon energy increases. Moreover, the electron-exchange influence on the fidelity ratio function is found to increase as the Fermi energy in the semiconductor plasma increases.