Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Coherent time evolution of a single-electron wave function

Kataoka, M. and Astley, M.R. and Thorn, A.L. and Oi, D.K.L. and Barnes, C.H.W. and Ford, C.J.B. and Anderson, D. and Jones, G.A.C. and Farrer, I. and Ritchie, D.A. and Pepper, M. (2009) Coherent time evolution of a single-electron wave function. Physical Review Letters, 102 (15). pp. 156801-1. ISSN 0031-9007

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

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.

Item type: Article
ID code: 19169
Notes: Strathprints' policy is to record up to 8 authors per publication, plus any additional authors based at the University of Strathclyde. More authors may be listed on the official publication than appear in the Strathprints' record.
Keywords: surface acoustic waves, quantum dots, computation, channel, states, spin, Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical Sciences
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 23 May 2010 14:03
    Last modified: 24 Oct 2012 15:59
    URI: http://strathprints.strath.ac.uk/id/eprint/19169

    Actions (login required)

    View Item