Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 18 June 1999:
Vol. 284. no. 5422, pp. 1967 - 1969
DOI: 10.1126/science.284.5422.1967
Prev | Table of Contents | Next

Reports

Quantum Computing with Electrons Floating on Liquid Helium

P. M. Platzman, 1* M. I. Dykman 2

A quasi-two-dimensional set of electrons (1 < N < 109) in vacuum, trapped in one-dimensional hydrogenic levels above a micrometer-thick film of liquid helium, is proposed as an easily manipulated strongly interacting set of quantum bits. Individual electrons are laterally confined by micrometer-sized metal pads below the helium. Information is stored in the lowest hydrogenic levels. With electric fields, at temperatures of 10-2 kelvin, changes in the wave function can be made in nanoseconds. Wave function coherence times are 0.1 millisecond. The wave function is read out with an inverted dc voltage, which releases excited electrons from the surface.

1 Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974, USA.
2 Michigan State University, Department of Physics and Astronomy, East Lansing, MI 48824, USA.
*   To whom correspondence should be addressed. E-mail: pmp{at}bell-labs.com

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Quantum Simulators.
I. Buluta and F. Nori (2009)
Science 326, 108-111
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)