Electron counting with a two-particle emitter

Abstract

We consider two driven cavities (capacitors) connected in series via an edge state. The cavities are driven such that they emit an electron and a hole in each cycle. Depending on the phase lag the second cavity can effectively absorb the carriers emitted by the first cavity and nullify the total current or the set-up can be made to work as a two-particle emitter. We examine the precision with which the current can be nullified and with which the second cavity effectively counts the particles emitted by the first one. To achieve single-particle detection we examine pulsed cavities.

5 pages, 3 figures, published in Phys. Rev. B

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• Anomalous Joule law in the adiabatic dynamics of a normal-superconductor quantum dot
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• Long-range Fermi sea correlations as the resource for encoding quantum information
• Time-bin entanglement of quasi-particles in semiconductor devices
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