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arXiv quant-ph/0403023quant-phcond-mat.mes-hall
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控制自旋轨道耦合的普适量子计算

Universal Quantum Computation through Control of Spin-Orbit Coupling

D. Stepanenko, N. E. Bonesteel

摘要:

我们提出了一种量子计算的方法,它使用控制的自旋轨道耦合在一个线性阵列的单电子量子点。量子门是通过脉冲相邻电子自旋之间的交换相互作用来实现的,包括由于自旋-轨道耦合引起的各向异性校正。对这些校正的控制,即使是有限的,也足以对编码成电子自旋对的量子比特进行通用量子计算。进行单量子比特旋转或受控非门所需的电压脉冲的数量与自旋轨道耦合控制程度的无量纲测量的倒数成比例。

英文摘要:

We propose a method for quantum computation which uses control of spin-orbit coupling in a linear array of single electron quantum dots. Quantum gates are carried out by pulsing the exchange interaction between neighboring electron spins, including the anisotropic corrections due to spin-orbit coupling. Control over these corrections, even if limited, is sufficient for universal quantum computation over qubits encoded into pairs of electron spins. The number of voltage pulses required to carry out either single qubit rotations or controlled-Not gates scales as the inverse of a dimensionless measure of the degree of control of spin-orbit coupling.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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