Exciting half-integer charges in a quantum point contact
arXiv:cond-mat/0701017 · doi:10.1103/PhysRevLett.99.096802
Abstract
We study a voltage-driven quantum point contact (QPC) strongly coupled to a qubit. We predict pronounced observable features in the QPC current that can be interpreted in terms of half-integer charge transfers. Our analysis is based on the Keldysh generating functional approach and contains general results, valid for all coherent conductors.
7 pages, 6 figures
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- Analytically solvable model of an electronic Mach-Zehnder interferometer
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- Full counting statistics of Majorana interferometers
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- Electron-electron correlations in a dynamical impurity system with a Fermi edge singularity
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- Linear response of a one-dimensional conductor coupled to a dynamical impurity with a Fermi edge singularity