Polarized and Unpolarized Emission from a Single Emitter in a Bullseye Resonator

• Published in: Laser & photonics reviews Vol. 18; no. 4
• Main Authors: Peniakov, Giora, Buchinger, Quirin, Helal, Mohamed, Betzold, Simon, Reum, Yorick, Rota, Michele B., Ronco, Giuseppe, Beccaceci, Mattia, Krieger, Tobias M., da Silva, Saimon F. Covre, Rastelli, Armando, Trotta, Rinaldo, Pfenning, Andreas, Höfling, Sven, Huber‐Loyola, Tobias
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01-04-2024
• Subjects: bullseye microcavities; circular Bragg grating microcavities; Emitters; Field emission; Polarization; Resonators; semiconductor quantum dots; single‐photon emitters; Symmetry
• ISSN: 1863-8880; 1863-8899
• DOI: 10.1002/lpor.202300835

Polarized |S|=0.99±0.01$| S | = 0.99 \pm 0.01$, and unpolarized |S|=0.03±0.01$| S | = 0.03 \pm 0.01$ emission from a single emitter embedded in a single, cylindrically symmetric device design is presented. The polarization stems from a position offset of the single emitter with respect to the cavity center, which breaks the cylindrical symmetry, and a position‐dependent coupling to the frequency degenerate eigenmodes of the resonator structure is shown. The experimental results are interpreted by using numerical simulations and by experimental mapping of the polarization‐resolved far‐field emission patterns. The findings can be generalized to any nanophotonic structure where two orthogonal eigenmodes are not fully spatially overlapping.
Polarized and unpolarized emission from a single emitter embedded in a circular Bragg grating (bullseye) microcavity is presented. The polarization originates from the emitter's position displacement relative to the microcavity center. The effect, simulation, and support of it by far‐field measurements of the emission emitted by this nanostructure are explained.