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首页> 外文期刊>Physica Status Solidi. C, Conferences and critical reviews >Quantum information processing on spin degrees of freedom in QDs placed in diluted magnetic semiconductor
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Quantum information processing on spin degrees of freedom in QDs placed in diluted magnetic semiconductor

机译:稀磁半导体中量子点自旋自由度的量子信息处理

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摘要

The spin degrees of freedom in quantum dot (QD) embedded in a diluted magnetic semiconductor (DMS) medium are considered in a model of a qubit and a gate for quantum information processing (QIP). The qubit is defined as a singlet and triplet pair of states of two electrons in a He-type QD in the DMS medium with strongly enhanced gyromagnetic factor. Methods of qubit rotation (Rabi oscillations) as well as two-qubit operations are suggested and analyzed. Moreover, decoherence related to spin waves (magnon-induced de-phasing) in this new system (QD in DMS) is studied, and the relevant time-scale is estimated in accordance with preliminary experimental results.
机译:在量子信息处理(QIP)的量子位和门模型中考虑了嵌入稀释磁半导体(DMS)介质中的量子点(QD)中的自旋自由度。量子位定义为DMS介质中具有强烈增强的旋磁因子的He型QD中两个电子的单重态和三重态对。提出并分析了量子位旋转(拉比振荡)以及两个量子位运算的方法。此外,在该新系统(DMS中的QD)中研究了与自旋波相关的退相干(磁振引起的移相),并根据初步实验结果估算了相关的时标。

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