Parametric amplification of magnetoplasmons in semiconductor quantum dots

Article

关键词: ELECTRON-GAS;    RESONANCE;    WAVES;    MAGNETIZATION;    FLUCTUATIONS;    TECHNOLOGY;    SYSTEMS;    NOISE;   

DOI  :  10.1103/PhysRevB.84.125441

来源: SCIE

【 摘 要 】

We show that the magnetoplasmon collective modes in quasi-two-dimensional semiconductor quantum dots can be parametrically amplified by periodically modulating the magnetic field perpendicular to the nanostructure. The two magnetoplasmon modes are excited and amplified simultaneously, leading to an exponential growth of the number of bosonic excitations in the system. We further demonstrate that damping mechanisms as well as anharmonicities in the confinement of the quantum dot lead to a saturation of the parametric amplification. This work constitutes a first step toward parametric amplification of collective modes in many-body fermionic systems beyond one dimension.

【 授权许可】

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