2021/04/30 by Giacomo Rebora, G. Rebora, Dario Ferraro +3
Computer Science · Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Electron #Enhanced Data Rates for GSM Evolution #Physics #Quantum #Quantum Hall effect #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Radiation #Telecommunications #cond-mat.mes-hall
paper · pdf · doi:10.1088/1367-2630/ac0288
published as New J. Phys. 23 063018 (2021) · 21 pages, 8 figures
openalex publication_date 2021/05/18 · arxiv created 2021/06/10 · arxiv updated 2021/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Abstract We study the quantum fluctuations of the two quadratures of the emitted electromagnetic radiation generated by a quantum Hall device in a quantum point contact geometry. In particular, we focus our attention on the role played by the unavoidable electron–electron interactions between the two edge channels at filling factor two. We investigate quantum features of the emitted microwave radiation, such as squeezing, by studying the current fluctuations at finite frequency, accessible through a two-filters set-up placed just after the quantum point contact. We compare two different drives, respectively a cosine and a train of Lorentzian pulses, used for the injection of the excitations into the system. In both cases quantum features are reduced due to the interactions, however the Lorentzian drive is still characterized by a robust squeezing effect which can have important application on quantum information.