Équipe de Recherche en Physique de l'Information Quantique


Abstract = {Charge detection utilizing a highly biased quantum point contact has become the most effective probe for studying few electron quantum dot circuits. Measurements on double and triple quantum dot circuits is performed to clarify a back action role of charge sensing on the confined electrons. The quantum point contact triggers inelastic transitions, which occur quite generally. Under specific device and measurement conditions these transitions manifest themselves as bounded regimes of telegraph noise within a stability diagram. A nonequilibrium transition from artificial atomic to molecular behavior is identified. Consequences for quantum information applications are discussed. {\copyright} 2008 The American Physical Society.},
Art_Number = {176805},
Author = {Taubert, D. and Pioro-Ladri{\`e}re, M. and Schr{\"o}er, D. and Harbusch, D. and Sachrajda, A.S. and Ludwig, S.},
Document_Type = {Article},
Journal = {Physical Review Letters},
Number = {17},
Source = {Scopus},
Title = {Telegraph noise in coupled quantum dot circuits induced by a quantum point contact},
Url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-43049103062&partnerID=40&md5=87acb149ef1d9ec3edad385c614056fa},
Volume = {100},
Year = {2008},
Bdsk-Url-1 = {http://www.scopus.com/inward/record.url?eid=2-s2.0-43049103062&partnerID=40&md5=87acb149ef1d9ec3edad385c614056fa}}