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Quantum information processing and entanglement in solid state devices

机译:固态设备中的量子信息处理和纠缠

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Control over electron-spin states, such as coherent manipulation, filtering and measurement promises access to new technologies in conventional as well as in quantum computation and quantum communication. In this paper, we review recent theoretical proposal of using electron spins in quantum confined structures as qubits. We also present a theoretical proposal for testing Bell's inequality in nano-electronics devices. We show that the entanglement of two electron spins can be detected in the spin filter effect in the nanostructure semiconductor/ferromagnetic semiconductor/semiconductor junction. In particular, we show how to test Bell's inequality via the measurement of the current-current correlation function in this setup.
机译:对电子自旋状态的控制,例如相干操纵,滤波和测量,有望在常规以及量子计算和量子通信中获得新技术的使用。在本文中,我们回顾了使用量子限制结构中的电子自旋作为量子位的最新理论建议。我们还提出了测试纳米电子设备中贝尔不等式的理论建议。我们表明,可以在纳米结构半导体/铁磁半导体/半导体结的自旋滤波器效应中检测到两个电子自旋的纠缠。特别是,我们展示了如何在此设置中通过测量电流-电流相关函数来测试贝尔不等式。

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