PhysRevLett.112.116603.pdf (1.36 MB)
Download fileSubterahertz Chaos Generation by Coupling a Superlattice to a Linear Resonator
journal contribution
posted on 2015-04-17, 13:08 authored by Alexander E. Hramov, V.V. Makarov, Alexey A. Koronovskii, S.A. Kurkin, Marat Gaifullin, Natalia V. Alexeeva, Kirill Alekseev, Mark GreenawayMark Greenaway, T.M. Fromhold, A. Patane, Feodor Kusmartsev, V.A. Maksimenko, Olga I. Moskalenko, Alexander BalanovAlexander BalanovWe investigate the effects of a linear resonator on the high-frequency dynamics of electrons in devices
exhibiting negative differential conductance. We show that the resonator strongly affects both the dc and ac
transport characteristics of the device, inducing quasiperiodic and high-frequency chaotic current oscillations.
The theoretical findings are confirmed by experimental measurements of a GaAs=AlAs miniband semiconductor
superlattice coupled to a linear microstrip resonator. Our results are applicable to other active solid
state devices and provide a generic approach for developing modern chaos-based high-frequency
technologies including broadband chaotic wireless communication and superfast random-number generation.
Funding
This work was partially supported by the President Program (MD–345.2013.2), RFBR (12-02-33071), EPSRC (EP/F005482/1) MES (SSTU-146), and the “Dynasty” Foundation.
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