Abstract We propose a scheme for preparing four-particle Greenberger--Horne--Zeilinger states using two identical bimodal cavities, each supports two modes with different frequencies. This scheme is an alternative to another published work [Christopher C Gerry 1996 Phys. Rev. A 53 4591]. Comparisons between them are discussed. The fidelity and the probability of success influenced by cavity decay for the generated states are also considered.
Received: 15 October 2006
Revised: 25 January 2007
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China
(Grant Nos~10225421 and 10674025), and the Natural Science Foundation
of Fujian Province, China (Grant No~2006J0235).
Cite this article:
Yang Zhen-Biao(杨贞标) Generation of four-particle GHZ states in bimodal cavity QED 2007 Chinese Physics 16 1963
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.
