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A quantum dot spin qubit with thermal bias

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Abstract

Temperature effect on the spin manipulation and spin injection in a quantum dot is investigated with the help of master equation method. Results show that the magnitude and the direction of the temperature difference between the source and drain leads have great impact on the spin store, writing, and reading processes. In practical devices, the thermal bias is quite general and then our results may be useful in quantum information processing and spintronics.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China Project (Grant No. 11147010), the Natural Science Foundation of Inner Mongolia (Grant No. 2012MS0113), the Research Program of Higher Education of Inner Mongolia Autonomous Region (Grant No. NJZY12111) and the Inner Mongolia autonomous region graduate education innovation Projects (Grant No. S20141012709).

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Authors and Affiliations

  1. School of Mathematics, Physics and Biological Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China

    Jia Liu & Jie Cheng

  2. Key laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources IMUST, Baotou, 014010, China

    Jia Liu

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  1. Jia Liu
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  2. Jie Cheng
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Correspondence to Jia Liu.

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Liu, J., Cheng, J. A quantum dot spin qubit with thermal bias. Quantum Inf Process 14, 479–489 (2015). https://doi.org/10.1007/s11128-014-0873-0

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