Dynamical Scheme for Interferometric Measurements of Full-Counting Statistics.
- Dasenbrook D Département de Physique Théorique, Université de Genève, 1211 Genève, Switzerland.
- Flindt C Department of Applied Physics, Aalto University, 00076 Aalto, Finland.
- 2016-10-15
Published in:
- Physical review letters. - 2016
English
We propose a dynamical scheme for measuring the full-counting statistics in a mesoscopic conductor using an electronic Mach-Zehnder interferometer. The conductor couples capacitively to one arm of the interferometer and causes a phase shift which is proportional to the number of transferred charges. Importantly, the full-counting statistics can be obtained from average current measurements at the outputs of the interferometer. The counting field can be controlled by varying the time delay between two separate voltage signals applied to the conductor and the interferometer, respectively. As a specific application, we consider measuring the entanglement entropy generated by partitioning electrons on a quantum point contact. Our scheme is robust against moderate environmental dephasing and may be realized thanks to recent advances in gigahertz quantum electronics.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.117.146801
- PMID 27740844
- Persistent URL
- https://sonar.ch/global/documents/116471
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