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Ivan Savenko
복잡계 이론물리 연구단
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Proposal for frequency-selective photodetector based on the resonant photon drag effect in a condensate of indirect excitons

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Title
Proposal for frequency-selective photodetector based on the resonant photon drag effect in a condensate of indirect excitons
Author(s)
V. M. Kovalev; M. V. Boev; I. G. Savenko
Publication Date
2018-07
Journal
PHYSICAL REVIEW B, v.98, no.4, pp.041304 -
Publisher
AMER PHYSICAL SOC
Abstract
We present a microscopic theory of a photon drag effect that appears in a Bose-Einstein condensate of neutral particles, considering indirect excitons in a double quantum well nanostructure under the action of a polarized electromagnetic field. It is shown that the dynamical polarization of excitons results in a resonant behavior of the exciton photon drag flux when the frequency of light is close to the gap between two energy levels of internal exciton motion. Specifically, we consider the ground and first excited energy states characterized by the angular momentum difference ±1, and thus, the helicity of light matters. We show that the resulting drag current is caused by both Bose-condensed particles and the particles in the excited states. As a result, the total current represents a superposition of thresholdlike and resonant contributions—a property which can be used in frequency-selective photodetection.©2018 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/4945
ISSN
2469-9950
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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