Birefringence via Doppler broadening and prevention of information hacking

作     者：Humayun Khan Muhammad Haneef Bakhtawar 

作者机构：Laborotary of Theoretical Physics Department of Physics Hazara University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2018年第27卷第1期

页      面：365-370页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

主　　题：birefringence Doppler broadening time gap hacking 

摘      要：We propose a new scheme for the coherent control of birefringent light pulses propagation in a four-level atomic medium. We modify the splitting of a light pulse by controlling the electric and magnetic responses. The Doppler broad- ening effect is also noted on the propagation of the birefringent pulses. The dispersions of the birefringence beams are oppositely manipulated for delay and advancement of time at a Doppler width of 10Y. A time gap is created between the birefringence beams, which protects from hacking of information. The time gap is then closed to restore the pulse into the original form by a reverse manipulation of the dispersion of the birefringence beams, i.e., introducing another medium whose transfer function is the complex conjugate of that of the original medium. The results are useful for secure communication technology.