Repository logo
 

Measurement and control of electron wave packets from a single-electron source


Change log

Authors

See, P 
Kashcheyevs, V 
Griffiths, JP 
Farrer, I 

Abstract

We report an experimental technique to measure and manipulate the arrival-time and energy distributions of electrons emitted from a semiconductor electron pump, operated as both a singleelectron source and a two-electron source. Using an energy-selective detector whose transmission we control on picosecond time scales, we can measure directly the electron arrival-time distribution and we determine the upper bound to the distribution width to be 30 ps. We study the effects of modifying the shape of the voltage waveform that drives the electron pump, and show that our results can be explained by a tunneling model of the emission mechanism. This information was in turn used to control the emission-time difference and energy gap between a pair of electrons.

Description

Keywords

51 Physical Sciences, 5104 Condensed Matter Physics, 7 Affordable and Clean Energy

Journal Title

Physical Review B - Condensed Matter and Materials Physics

Conference Name

Journal ISSN

1098-0121
1550-235X

Volume Title

92

Publisher

American Physical Society (APS)
Sponsorship
Engineering and Physical Sciences Research Council (EP/J003417/1)
Engineering and Physical Sciences Research Council (EP/K004077/1)
This research was supported by the UK Department for Business, Innovation and Skills, the National Physical Laboratory’s Strategic Research Programme and the UK Engineering and Physical Sciences Research Council. V.K. has been supported by the Latvian Council of Science within research project no. 146/2012.