| Quantum Information Transfer from a Double Quantum Dot System to a Cavity Field＊ |
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| 引用本文： | 谭庆收,董勇,匡乐满.Quantum Information Transfer from a Double Quantum Dot System to a Cavity Field＊[J].理论物理通讯,2010,53(1):71-74. |
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| 作者姓名： | 谭庆收 董勇 匡乐满 |
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| 基金项目： | Supported by the National Fundamental Research Program under Grant No. 2007CB925204, the National Natural Science Foundation of China under Grant Nos. 10775048 and 10325523, and the Education Committee of Hunan Province under Grant No. 08W012 |
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| 摘 要： | In this paper, we propose a scheme to realize quantum information transfer from a double quantum dot （DQD） system to a quantized cavity field. The DQD and the cavity field are treated as a two-state charge qubit and a continuous-variable system, respectively. It is shown that quantum information encoded in the two-state DQD system can be transferred to quantum states of the cavity field with a continuous-variable basis through appropriate projective measurements with respect to the DQD.
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| 关 键 词： | 连续变量系统 量子信息传输 双量子点 光场 信息传递 量子比特 投影测量 系统编码 |
| 收稿时间： | 2009-08-24 |
Quantum Information Transfer from a Double Quantum Dot System to a Cavity Field |
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| TAN Qing-Shou,DONG Yong KUANG Le-Man.Quantum Information Transfer from a Double Quantum Dot System to a Cavity Field[J].Communications in Theoretical Physics,2010,53(1):71-74. |
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| Authors: | TAN Qing-Shou DONG Yong KUANG Le-Man |
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| Institution: | Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China |
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| Abstract: | In this paper, we propose a scheme to realize quantum information transfer from a double quantum dot (DQD) system to a quantized cavity field. The DQD and the cavity field are treated as a two-state charge qubit and a continuous-variable system, respectively. It is shown that quantum information encoded in the two-state DQD system can be transferred to quantum states of the cavity field with a continuous-variable basis through appropriate projective measurements with respect to the DQD. |
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| Keywords: | quantum information transfer double quantum dot cavity field charge qubit coherent state |
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