Atomic coherence control on the entanglement of two atoms in two-photon processes
Hu Yao-Hua(胡要花)a), Fang Mao-Fa(方卯发)b)†, and Wu Qin(吴琴)b)
a College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; b School of Basic Medical Science, Guangdong Medical College, Dongguan 523808, China
Abstract Considering two identical two-level atoms interacting with a single-mode thermal field through two-photon processes, this paper studies the atomic coherence control on the entanglement between two two-level atoms, and finds that the entanglement is greatly enhanced due to the initial atomic coherence. The results show that the entanglement can be manipulated by changing the initial parameters of the system, such as the superposition coefficients and the relative phases of the initial atomic coherent state and the mean photon number of the cavity field.
Received: 28 October 2006
Revised: 14 November 2006
Accepted manuscript online:
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
Fund: Project supported by the National Natural Science
Foundation of China (Grant No 10374025).
Cite this article:
Hu Yao-Hua(胡要花), Fang Mao-Fa(方卯发), and Wu Qin(吴琴) Atomic coherence control on the entanglement of two atoms in two-photon processes 2007 Chinese Physics 16 2407
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
