Simulation and Analysis of the Optical Characteristics of Cylindrical Micropillars with InAs/GaAs Quantum Dots

Bobrov, M. A.; Blokhin, S. A.; Maleev, N. A.; Kuzmenkov, A. G.; Blokhin, A. A.; Васильев, А. П.; Guseva, Yu. A.; Rakhlin, M. V.; Galimov, A. I.; Serov, Yu. M.; Troshkov, S. I.; Ustinov, V. M.; Торопов, А. А.

doi:10.1134/s0021364022800207

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…Boundary conditions were set by adding a perfectly matched layer (PML) around the computational domain of the microcavity structure to absorb any incident waves, regardless of the angle of incidence and wavelength. The low-temperature refractive indices of GaAs and Al 0.9 Ga 0.1 As were used in the model of the micropillar [44]. We used the optimal resolutions, which yielded reliable error accuracy of around 3% with a reasonable computation time.…”

Section: Numerical Calculationsmentioning

confidence: 99%

Towards Bright Single-Photon Emission in Elliptical Micropillars

et al. 2023

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In recent years, single-photon sources (SPSs) based on the emission of a single semiconductor quantum dot (QD) have been actively developed. While the purity and indistinguishability of single photons are already close to ideal values, the high brightness of SPSs remains a challenge. The widely used resonant excitation with cross-polarization filtering usually leads to at least a two-fold reduction in the single-photon counts rate, since single-photon emission is usually unpolarized, or its polarization state is close to that of the exciting laser. One of the solutions is the use of polarization-selective microcavities, which allows one to redirect most of the QD emission to a specific polarization determined by the optical mode of the microcavity. In the present work, elliptical micropillars with distributed Bragg reflectors are investigated theoretically and experimentally as a promising design of such polarization-selective microcavities. The impact of ellipticity, ellipse area and verticality of the side walls on the splitting of the optical fundamental mode is investigated. The study of the near-field pattern allows us to detect the presence of higher-order optical modes, which are classified theoretically. The possibility of obtaining strongly polarized single-photon QD radiation associated with the short-wavelength fundamental cavity mode is shown.

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Section: Numerical Calculationsmentioning

confidence: 99%

Towards Bright Single-Photon Emission in Elliptical Micropillars

et al. 2023

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Improving P-Doped DBRs Operation at Cryogenic Temperatures: Investigating Different Mirror Geometry

Namvar,

Uusitalo,

Virtanen

et al. 2024

IEEE Photonics J.

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Optical Modes in Elliptical Microcavities for Single-Photon Sources

Kazanov

Monakhov

2023

Jetp Lett.

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A theory of optical modes in an elliptical microcavity has been developed using Mathieu functions in elliptical coordinates. A key difference from the circular case is the splitting of doubly degenerate modes. Split optical modes have been numerically calculated and their symmetry has been determined. A method has been proposed to choose the parameters of a cavity for a certain wavelength. The difference between the energies of optical modes in the cavity with metallic walls and in the dielectric cavity is no more than ~20%. The dispersion relations of optical modes show the possibility of degeneracy of modes with different symmetries, which allows the spectral and polarization filtering of radiation of single-photon sources and the fabrication of sources of multiply entangled states.

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Simulation and Analysis of the Optical Characteristics of Cylindrical Micropillars with InAs/GaAs Quantum Dots

Cited by 3 publications

References 14 publications

Towards Bright Single-Photon Emission in Elliptical Micropillars

Towards Bright Single-Photon Emission in Elliptical Micropillars

Improving P-Doped DBRs Operation at Cryogenic Temperatures: Investigating Different Mirror Geometry

Optical Modes in Elliptical Microcavities for Single-Photon Sources

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