Équipe de Recherche en Physique de l'Information Quantique


Abstract = {We employ an intermediate excited charge state of a lateral quantum dot device to increase the charge detection contrast during the qubit state readout procedure, allowing us to increase the visibility of coherent qubit oscillations. This approach amplifies the coherent oscillation magnitude but has no effect on the detector noise resulting in an increase in the signal to noise ratio. In this letter, we apply this scheme to demonstrate a significant enhancement of the fringe contrast of coherent Landau-Zener-St{\"u}ckelberg oscillations between singlet S and triplet T two-spin states. {\copyright} 2012 Crown.},
Art_Number = {233101},
Author = {Studenikin, S.A. and Thorgrimson, J. and Aers, G.C. and Kam, A. and Zawadzki, P. and Wasilewski, Z.R. and Bogan, A. and Sachrajda, A.S.},
Document_Type = {Article},
Journal = {Applied Physics Letters},
Number = {23},
Source = {Scopus},
Title = {Enhanced charge detection of spin qubit readout via an intermediate state},
Url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84870902032&partnerID=40&md5=1fe2375f833c2d19e64105d67a576fe2},
Volume = {101},
Year = {2012},
Bdsk-Url-1 = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84870902032&partnerID=40&md5=1fe2375f833c2d19e64105d67a576fe2}}