Dynamical Scheme for Interferometric Measurements of Full-Counting Statistics
| Autor: | David Dasenbrook, Christian Flindt |
|---|---|
| Přispěvatelé: | University of Geneva, Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2016 |
| Předmět: |
Quantum optics
Physics Quantum Physics Mesoscopic physics Interferometric visibility ta114 Condensed Matter - Mesoscale and Nanoscale Physics Dephasing Quantum point contact General Physics and Astronomy FOS: Physical sciences Quantum entanglement Mach–Zehnder interferometer Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences 010305 fluids & plasmas Interferometry 0103 physical sciences Statistics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 010306 general physics Quantum Physics (quant-ph) |
| Zdroj: | Physical Review Letters |
| DOI: | 10.48550/arxiv.1605.01926 |
| Popis: | 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 can be realized thanks to recent advances in giga-hertz quantum electronics. Comment: 7+1 pages, 3 figures, many references |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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