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TT: Fachverband Tiefe Temperaturen
TT 2: Transport: Nanoelectronics I - Quantum Dots and Wires, Point Contacts 1
TT 2.4: Vortrag
Montag, 23. März 2009, 11:00–11:15, HSZ 301
Error Acconting in Electron Counting Experiments — •Michael Wulf and Alexander B. Zorin — Physikalisch Technische Bundeanstalt, Bundesallee 100, 38116 Braunschweig
Electron counting experiments attempt to provide a current of a known number of electrons per unit time. We propose architectures utilizing a few readily available electron-pumps or turnstiles with the typical error rates of 1 part per 104 with common sensitive electrometers to achieve the desirable accuracy of 1 part in 108. This is achieved not by counting all transferred electrons but by counting only the errors of individual devices; these are less frequent and therefore readily recognized and accounted for. We thereby ease the route towards quantum based standards for current and capacitance.