Quantum Hall bilayer digital amplifier
Physics Department, Tbilisi State University, 0128 Tbilisi,, Università di Firenze, 50139 Firenze, Italy
2 Laboratoire de Physique Théorique et Astroparticules, CNRS-UMR5207, Université Montpellier 2, 34095 Montpellier, France
Corresponding author: a firstname.lastname@example.org
Published online: 17 February 2006
A quantum Hall double layer system at total Landau level filling factor ν=1, seeded by a modulated ac-voltage input signal of frequency inside the forbidden band gap, is demonstrated to work as a digital amplifier of ultra weak signals. The theory employs to the sine-Gordon model and it is confirmed by the first experimental observations of nonlinear bistable transmission in a pendula chain.
PACS: 73.43.Lp – Collective excitations / 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems / 05.45.Yv – Solitons
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006