Title :
Electron tunnelling limited coherence time of single quantum dot photodiode based qubit
Author :
Kolodka, R.S. ; Ramsay, A.J. ; Skiba-Szymanska, J. ; Fry, P.W. ; Liu, H.Y. ; Whittaker, D.M. ; Fox, A.M. ; Skolnick, M.S.
Author_Institution :
Dept. Physics and Astronomy, University of Sheffield, S3 7RH, United Kingdom
Abstract :
We demonstrate technique to time-resolve the population inversion of a quantum dot exciton, and measure T1. Combined with measurements of the coherence time T2. T2 is limited by electron tunnelling from the dot.
Keywords :
Coherence; Electrons; Excitons; Extraterrestrial measurements; Photoconductivity; Photodiodes; Pulse measurements; Quantum dot lasers; Quantum dots; Tunneling;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2007. QELS '07
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/QELS.2007.4431634
