Physics – Quantum Physics
Scientific paper
2006-04-27
Physics
Quantum Physics
4 pages, 2 figures
Scientific paper
In the present paper, we propose a "repeat-until-success" scheme induced by single particle measurement to generate arbitrary symmetric states based on spin network. This protocol requires no modulated controls during the whole process and it provides a persistent approach towards the desired symmetric state. As a special case, we demonstrate that W state can be created with unit probability within this framework.
Chen Qing
Cheng Jianhua
Du Jiangfeng
Wang Ke-Lin
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