Carrier-envelope phase control electron transport in an asymmetric double quantum dot irradiated by a few-cycle pulse

Carrier-envelope phase control electron transport in an asymmetric double quantum dot irradiated by a few-cycle pulse
复制标题

几个周期脉冲照射的不对称双量子点中的载流子包络相控制电子传输

DOI:
10.1016/j.optcom.2014.04.066
复制
发表时间:
2014-10
影响因子:
2.4
通讯作者:
Lee Ray-Kuang
Lee Ray-Kuang
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Yang Wen-Xing;Chen Ai-Xi;Guo Hao;Bai Yanfeng;Lee Ray-Kuang

文献摘要

参考文献

相似文献

我们提出了一种在不对称双量子点系统中相干控制单个电子传输的理论方案。单电子传输源于外部施加的少周期脉冲和点间隧道效应之间的内在相互作用。通过求解点密度矩阵的运动方程,我们在数值上揭示了电流对少周期脉冲的载流子包络相位(CEP)表现出显着的依赖性,这类似于阿哈诺夫-博姆(AB)干涉仪中磁通量控制的相干传输。因此,通过改变脉冲的 CEP,可以瞬时或周期性地抑制或增强电流。我们的结果说明了通过 CEP 控制利用少周期脉冲在量子点系统中激发的潜力,并为可能的实验实现的设计提供了指导。
We propose a theoretical scheme to coherently control the transport of a single electron in an asymmetric double-quantum-dot system. The single-electron transport originates from the intrinsic interplay between the externally applied few-cycle pulse and the inter-dot tunneling. Solving the equations of motion for dot-density matrix, we reveal numerically that the current exhibits a significant dependence on the carrier-envelope phase (CEP) of the few-cycle pulse, which is similar to the magnetic flux controlled coherent transport in an Aharnov–Bohm (AB) interferometer. As a result, by varying the CEP of the pulse one can suppress or enhance the current either instantaneously or periodically. Our results illustrate the potential to utilize few-cycle pulses for excitation in quantum dot systems through the CEP control, as well as a guidance in the design for possible experimental implementations.
DOI: 10.1103/physrevb.73.233305
发表时间: 2006-06
期刊: Physical Review B
影响因子: 3.7
作者:
J. Dynes;E. Paspalakis
通讯作者: J. Dynes;E. Paspalakis
载波包络相位相关的原子相干性和量子节拍
DOI: 10.1103/physreva.76.013832
发表时间: 2007-07
期刊: Physical Review A
影响因子: 2.9
作者:
通讯作者: --
DOI: 10.1103/physrevlett.98.167404
发表时间: 2007-04
影响因子: 8.6
作者:
C. Van Vlack;S. Hughes
通讯作者: C. Van Vlack;S. Hughes
DOI: 10.1103/physrevb.60.8798
发表时间: 1999-06
期刊: Physical Review B
影响因子: 3.7
作者:
L. A. Openov
通讯作者: L. A. Openov
DOI: 10.1103/physrevb.76.235313
发表时间: 2007-08
期刊: Physical Review B
影响因子: 3.7
作者:
K. Shen;M. W. Wu
通讯作者: K. Shen;M. W. Wu