Research into fidelity of quantum information in atom's coupling to two optical fields system
Ran Yang-qiang · Journal of Chongqing Technology and Business University · 2007
The real-time evolution process of quantum information fidelity of a system for an atom interac- ting with two distinct optical cavities under phase extenuation action is discussed.The fidelity of quantum trans- mission of a random passivity quantum bit's coulping with two-stage energy atom through optical field is stud- ied.The supporting effect of the system as the transmission channel on the information fidelity of the system is an- alyzed.The effect of the phase decoherence rate and detuning parameter on the fidelity is discussed.The maxi- mum fidelity of the transmission through the channel can be achieved.