Effect of phonons on optical properties of RbCl quantum pseudodot qubits

In this work, an electron which is strongly coupled to the strong electron-longitudinal optical (LO) phonon in RbCl quantum pseudodot qubits is considered. First, we employ the Pekar variational method and obtain the eigenenergies and eigenfunctions of the ground and the first-excited states of the...

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Bibliographic Details
Published inOptical and quantum electronics Vol. 49; no. 2; pp. 1 - 10
Main Authors Khordad, R., Ghanbari, A.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.02.2017
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Computer Communication Networks
Electrical Engineering
Iterative methods
Lasers
Optical Devices
Optical properties
Optics
Photonics
Physics
Physics and Astronomy
Refractivity
Quantum pseudodot
Optical properties
Phonon
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Summary:In this work, an electron which is strongly coupled to the strong electron-longitudinal optical (LO) phonon in RbCl quantum pseudodot qubits is considered. First, we employ the Pekar variational method and obtain the eigenenergies and eigenfunctions of the ground and the first-excited states of the system. Then, we have studied optical properties of the system under strong electron-LO phonon coupling. In this regard, the refractive index changes and absorption coefficient of the system are obtained using compact-density-matrix approach and iterative method. It is found that the absorption coefficients show saturation in the presence of phonon effect. This behavior occurs at small quantum size and for different potential height. Our results show that both the structure parameters and phonon effect have a great effect on the total absorption and refractive index changes.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-017-0915-9