Self-Assembled Wigner Crystals as Mediators of Spin Currents and Quantum Information.

Self-Assembled Wigner Crystals as Mediators of Spin Currents and Quantum Information.
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自组装维格纳晶体作为自旋流和量子信息的中介。

DOI:
10.1103/physrevlett.115.216804
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发表时间:
2015
影响因子:
8.6
通讯作者:
Antonio B
Antonio B
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Antonio B

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在最小控制下出现在门控器件中的多体结构的技术应用在很大程度上是未开发的。在这里,我们展示了半导体量子线中的新兴维格纳晶体如何促进可扩展量子计算机的关键要求,即在微米的距离上忠实地传输以自旋编码的量子信息。传输的保真度是非常高的,比相关的散肩效应更快,独立于导线中的空间电荷配置的细节,并且在稀释冰箱温度下可实现。转移可以证明近单一的多体非平衡动力学迄今未见的固态设备。它也可以在自旋电子学中作为一种方法,用于在没有电荷移动的情况下在一定距离上纯自旋电流。
Technological applications of many-body structures that emerge in gated devices under minimal control are largely unexplored. Here we show how emergent Wigner crystals in a semiconductor quantum wire can facilitate a pivotal requirement for a scalable quantum computer, namely, transmitting quantum information encoded in spins faithfully over a distance of micrometers. The fidelity of the transmission is remarkably high, faster than the relevant decohering effects, independent of the details of the spatial charge configuration in the wire, and realizable in dilution refrigerator temperatures. The transfer can evidence near unitary many-body nonequilibrium dynamics hitherto unseen in a solid-state device. It could also be useful in spintronics as a method for pure spin current over a distance without charge movement.
DOI: --
发表时间: 2006
期刊: --
影响因子: --
作者:
Iroon Polytechniou-
通讯作者: Iroon Polytechniou-