Noise characterization of a single parameter quantized charge pump | Zendy

F. Hohls | Zendy; N. Maire | Zendy; B. Kaestner | Zendy; K. Pierz | Zendy; H. W. Schumacher | Zendy; R. J. Haug | Zendy; Massimo Macucci | Zendy; Giovanni Basso | Zendy

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Noise characterization of a single parameter quantized charge pump

Author(s) -

F. Hohls,

N. Maire,

B. Kaestner,

K. Pierz,

H. W. Schumacher,

R. J. Haug,

Massimo Macucci,

Giovanni Basso

Publication year - 2009

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.3140501

Subject(s) - shot noise , noise (video) , plateau (mathematics) , physics , adiabatic process , electron , current (fluid) , voltage , flicker noise , charge (physics) , charge pump , atomic physics , optoelectronics , noise figure , quantum mechanics , computer science , optics , capacitor , mathematics , amplifier , cmos , mathematical analysis , artificial intelligence , detector , image (mathematics) , thermodynamics

The shot noise of a single parameter quantized charge pump is studied. The pumped current can be varied using a control gate. Quantized current plateaus I = ne fp with fp the pumping frequency and e the electron charge are observed. The shot noise is minimal for each current plateau and maximal in between. Interestingly the first expected quantized current plateau at n = 1 is missing for certain control gate voltages. We use the measured shot noise to extract the probabilities for pumping none, one or two electrons at the position of the missing step. These probabilities can be used to characterize the dynamics of the non‐adiabatic pumping process.

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