Long-range spin transport in asymmetric quadruple quantum dots configurations

2025/05/29 by Fernández-Fernández, David, Bayer, Johannes C., Haug, Rolf J. +1
#FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)

paper · doi:10.48550/arxiv.2505.23901

Abstract

We theoretically investigate long-range coherent charge transport in linear quadruple quantum dot (QQD) arrays under reduced symmetry configurations. Employing a master equation approach, we identify precise resonant conditions that enable minimal occupation of intermediate dots, thereby facilitating long-range transfer between distant sites. Our results highlight the critical role of parameter asymmetry and coherent tunneling mechanisms in achieving efficient quantum state transfer.

Citations

• Long distance spin shuttling enabled by few-parameter velocity optimization
• Electrical readout of spins in the absence of spin blockade
• Semiconductor spin qubits

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