We present a numerical study of a multichannel electronicMach-Zehnder interferometer, based onmagnetically driven noninteracting edge states. The electron path is defined by a full-scale potential landscape on the twodimensional electron gas at filling factor 2, assuming initially only the first Landau level as filled.We tailor the two beamsplitters with 50% interchannelmixing and measure Aharonov-Bohm oscillations in the transmission probability of the second channel.We perform time-dependent simulations by solving the electron Schrödinger equation through a parallel implementation of the split-step Fourier method, and we describe the charge-carrier wave function as a Gaussian wave packet of edge states.We finally develop a simplified theoretical model to explain the features observed in the transmission probability, and we propose possible strategies to optimize gate performances.

Dynamics and Hall-edge-state mixing of localized electrons in a two-channel Mach-Zehnder interferometer / Bellentani, Laura; Beggi, Andrea; Bordone, Paolo; Bertoni, Andrea. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 97:(2018), pp. 205419-1-205419-11. [10.1103/PhysRevB.97.205419]

Dynamics and Hall-edge-state mixing of localized electrons in a two-channel Mach-Zehnder interferometer

Laura Bellentani
;
Andrea Beggi;Paolo Bordone;Andrea Bertoni
2018

Abstract

We present a numerical study of a multichannel electronicMach-Zehnder interferometer, based onmagnetically driven noninteracting edge states. The electron path is defined by a full-scale potential landscape on the twodimensional electron gas at filling factor 2, assuming initially only the first Landau level as filled.We tailor the two beamsplitters with 50% interchannelmixing and measure Aharonov-Bohm oscillations in the transmission probability of the second channel.We perform time-dependent simulations by solving the electron Schrödinger equation through a parallel implementation of the split-step Fourier method, and we describe the charge-carrier wave function as a Gaussian wave packet of edge states.We finally develop a simplified theoretical model to explain the features observed in the transmission probability, and we propose possible strategies to optimize gate performances.
2018
15-mag-2018
97
205419-1
205419-11
Dynamics and Hall-edge-state mixing of localized electrons in a two-channel Mach-Zehnder interferometer / Bellentani, Laura; Beggi, Andrea; Bordone, Paolo; Bertoni, Andrea. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 97:(2018), pp. 205419-1-205419-11. [10.1103/PhysRevB.97.205419]
Bellentani, Laura; Beggi, Andrea; Bordone, Paolo; Bertoni, Andrea
File in questo prodotto:
File Dimensione Formato  
PhysRevB.97.205419.pdf

Accesso riservato

Tipologia: Versione pubblicata dall'editore
Dimensione 2.03 MB
Formato Adobe PDF
2.03 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1162622
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 8
social impact