Coherent Time Evolution of a Single-Electron Wave Function

M. Kataoka; M. R. Astley; A. L. Thorn; D. K. L. Oi; C. H. W. Barnes; C. J. B. Ford; D. Anderson; G. A. C. Jones; I. Fairer; D. A. Ritchie; M. Pepper

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Coherent Time Evolution of a Single-Electron Wave Function

机译：单电子波函数的相干时间演化

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Observation of coherent single-electron dynamics is severely limited by experimental bandwidth. We present a method to overcome this using moving quantum dots defined by surface acoustic waves. Each dot holds a single electron, and travels through a static potential landscape. When the dot passes abruptly between regions of different confinement, the electron is excited into a superposition of states, and oscillates unitarily from side to side. We detect these oscillations by using a weak, repeated measurement of the current across a tunnel barrier, and find close agreement with simulations.

机译：相干单电子动力学的观察受到实验带宽的严重限制。我们提出了一种使用表面声波定义的移动量子点克服此问题的方法。每个点都持有一个电子，并穿过静态势能图。当点突然在不同限制区域之间通过时，电子被激发成状态的叠加，并从一侧到另一侧整体振荡。我们通过对隧道势垒两端的电流进行微弱的重复测量来检测这些振荡，并找到与仿真的一致性。

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来源
《Physical review letters》 |2009年第15期|249-252|共4页
作者
M. Kataoka; M. R. Astley; A. L. Thorn; D. K. L. Oi; C. H. W. Barnes; C. J. B. Ford; D. Anderson; G. A. C. Jones; I. Fairer; D. A. Ritchie; M. Pepper;
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Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom Toshiba Research Europe Limited, 208 Cambridge Science Park, Cambridge CB4 OGZ, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

SUPA, Department of Physics, University of Strathclyde, Glasgow G4 ONG, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 OHE, United Kingdom Toshiba Research Europe Limited, 208 Cambridge Science Park, Cambridge CB4 OGZ, United Kingdom;

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正文语种 eng
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关键词
coulomb blockade; single-electron tunneling; acoustoelectric and magnetoacoustic effects; quantum dots;

机译：库仑封锁;单电子隧穿声电和磁声效应;量子点;

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7. Coherent time evolution of a single-electron wave function [O] . Kataoka, M., Astley, M.R., Thorn, A.L., 2009

机译：单电子波函数的相干时间演化

Coherent Time Evolution of a Single-Electron Wave Function

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