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- Title
Sequential Measurement of Displacement and Conduction Currents in Electronic Devices.
- Authors
Albareda, Guillermo; Traversa, Fabio Lorenzo; Benali, Abdelilah
- Abstract
The extension of the Ramo-Schockley-Pellegrini theorem for quantum systems allows to define a positive-operator valued measure (POVM) for the total conduction plus displacement electrical current. The resulting current operator is characterized by two parameters, viz. the width of the associated Gaussian functions and the lapse of time between consecutive measurements. For large Gaussian dispersions and small time intervals, the operator obeys to a continuous weak-measurement scheme. Contrarily, in the limit of very narrow Gaussian widths and a single-shot measurement, the operator corresponds to a standard von Neumann (projective) measurement. We have implemented the resulting measurement protocol into a quantum electron transport simulator. Numerical results for a resonant tunneling diode show the great sensibility of current-voltage characteristics to different parameter configurations of the total current operator.
- Subjects
DISPLACEMENT (Mechanics); ELECTRIC conductivity; ELECTRONIC equipment; QUANTUM mechanics; DISPLACEMENT currents (Electric); RESONANT tunneling diodes
- Publication
Fluctuation & Noise Letters, 2016, Vol 15, Issue 3, p1
- ISSN
0219-4775
- Publication type
Article
- DOI
10.1142/S0219477516400046