Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Quantum Charge Fluctuations and the Polarizability of the Single Electron Box

Published

Author(s)

Konrad Lehnert, B A. Turek, K Bladh, L F. Spietz, D Gunnarsson, P Delsing

Abstract

We measure the average charge on a single-electron box, with an accuracy of 10-3 e as a function of an externally applied potential. At this accuracy, we observe that the total capacitance of the box is a function of temperature, of external potential and of the quasiparticle density of states in the metal from which the box is formed. We find excellent agreement between these measurements and a theory that treats the quantum fluctuations of charge perturbatively.
Citation
Physical Review Letters

Keywords

quantum charge fluctuations, single-electron circuits

Citation

Lehnert, K. , Turek, B. , Bladh, K. , Spietz, L. , Gunnarsson, D. and Delsing, P. (2008), Quantum Charge Fluctuations and the Polarizability of the Single Electron Box, Physical Review Letters (Accessed March 4, 2024)
Created October 16, 2008