Go to content
UR Home

High fidelity measurement of singlet-triplet state in a quantum dot

Meunier, T., Tielrooij, K.-J., Vink, I. T, Koppens, F. H. L., Tranitz, Hans-Peter, Wegscheider, Werner, Kouwenhoven, Leo P. and Vandersypen, L. M. K. (2006) High fidelity measurement of singlet-triplet state in a quantum dot. physica status solidi b 243 (15), pp. 3855-3858.

Download (201kB) - Repository staff only
Date of publication of this fulltext: 25 Jan 2010 13:36

at publisher (via DOI)


We demonstrate experimentally a read-out method that distinguishes between two-electron spin states in a quantum dot. This scheme combines the advantages of the two existing mechanisms for spin-to-charge conversion with single-shot charge detection: a large difference in energy between the two states and a large difference in tunnel rate between the states and a reservoir. As a result, a spin measurement fidelity of 97% was achieved, which is much higher than previously reported fidelities.

Export bibliographical data

Item type:Article
Institutions:Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Identification Number:
03.65.-w; 03.67.Mn; 42.50.Dv; 73.21.LaPACS
Dewey Decimal Classification:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Item ID:12232
Owner only: item control page


Downloads per month over past year

  1. Homepage UR

University Library

Publication Server


Publishing: oa@ur.de

Dissertations: dissertationen@ur.de

Research data: daten@ur.de

Contact persons