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篇目详细内容 |
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【篇名】 |
Feedback control of quantum system |
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【刊名】 |
Frontiers of Physics in China |
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【刊名缩写】 |
Front. Phys. China |
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【ISSN】 |
1673-3487 |
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【EISSN】 |
1673-3606 |
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【DOI】 |
10.1007/s11467-006-0032-x |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2006 |
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【卷期】 |
1
卷3期 |
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【页码】 |
256-262
页,共
7
页 |
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【作者】 |
DONG Dao-yi;
CHEN Zong-hai;
ZHANG Chen-bin;
CHEN Chun-lin;
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【关键词】 |
quantum feedback control; information acquisition; state recognition; coherence |
【摘要】 |
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Feedback is a significant strategy for the control of quantum system. Information acquisition is the greatest difficulty in quantum feedback applications. After discussing several basic methods for information acquisition, we review three kinds of quantum feedback control strategies: quantum feedback control with measurement, coherent quantum feedback, and quantum feedback control based on cloning and recognition. The first feedback strategy can effectively acquire information, but it destroys the coherence in feedback loop. On the contrary, coherent quantum feedback does not destroy the coherence, but the capability of information acquisition is limited. However, the third feedback scheme gives a compromise between information acquisition and measurement disturbance. |
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