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arXiv 0802.3928cond-mat.mes-hall
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量子点中载流子的非马尔可夫动力学

Non-Markovian Dynamics of Charge Carriers in Quantum Dots

Eduardo Vaz, Jordan Kyriakidis

摘要:

我们研究了多层载流量子点中束缚粒子的动力学。我们特别关注共振隧穿传输的机制,其中有几个通道可用于传输。通过玻恩近似下的非马尔可夫形式,我们研究了受限粒子的实时演化,包括输运诱导的退相干和弛豫。在相干叠加的情况下,不同粒子数的状态,我们发现,一个福克空间的相干性可能会保留,即使在存在隧道进出的点。实时的结果,提出了各种不对称的隧道速率到不同的轨道。

英文摘要:

We have investigated the dynamics of bound particles in multilevel current-carrying quantum dots. We look specifically in the regime of resonant tunnelling transport, where several channels are available for transport. Through a non-Markovian formalism under the Born approximation, we investigate the real-time evolution of the confined particles including transport-induced decoherence and relaxation. In the case of a coherent superposition between states with different particle number, we find that a Fock-space coherence may be preserved even in the presence of tunneling into and out of the dot. Real-time results are presented for various asymmetries of tunneling rates into different orbitals.

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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