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The photocurrent generated by photon replica states of an off-resonantly coupled dot-cavity system

The photocurrent generated by photon replica states of an off-resonantly coupled dot-cavity system


Title: The photocurrent generated by photon replica states of an off-resonantly coupled dot-cavity system
Author: Abdullah, Nzar Rauf
Tang, Chi-Shung
Manolescu, Andrei   orcid.org/0000-0002-0713-4664
Gudmundsson, Vidar   orcid.org/0000-0001-8939-3522
Date: 2019-10-11
Language: English
Scope: 14703
University/Institute: Háskóli Íslands
University of Iceland
Reykjavik University
Háskólinn í Reykjavík
School: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
School of Science and Engineering (RU)
Tækni- og verkfræðideild (HR)
Department: Raunvísindastofnun (HÍ)
Science Institute (UI)
Series: Scientific Reports;9(1)
ISSN: 2045-2322
DOI: 10.1038/s41598-019-51320-8
Subject: Nanophotonics and plasmonics; Quantum dots; Ljósfræði; Eðlisfræði
URI: https://hdl.handle.net/20.500.11815/1532

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Citation:

Abdullah, N.R., Tang, C., Manolescu, A. et al. The photocurrent generated by photon replica states of an off-resonantly coupled dot-cavity system. Scientific Reports 9, 14703 (2019). https://doi.org/10.1038/s41598-019-51320-8

Abstract:

Transport properties of a quantum dot coupled to a photon cavity are investigated using a quantum master equation in the steady-state regime. In the off-resonance regime, when the photon energy is smaller than the energy spacing between the lowest electron states of the quantum dot, we calculate the current that is generated by photon replica states as the electronic system is pumped with photons. Tuning the electron-photon coupling strength, the photocurrent can be enhanced by the influences of the photon polarization, and the cavity-photon coupling strength of the environment. We show that the current generated through the photon replicas is very sensitive to the photon polarization, but it is not strongly dependent on the average number of photons in the environment.

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