DPG Phi
Verhandlungen
Verhandlungen
DPG

SKM 2021 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

HL: Fachverband Halbleiterphysik

HL 8: Poster Session II

HL 8.12: Poster

Tuesday, September 28, 2021, 10:00–13:00, P

Design and fabrication of waveguide-based nanobeam cavity for on-chip single photon source — •Yuhui Yang1, Uğur Meriç Gür1,2, Johannes Schall1, Ronny Schmidt1, Arsenty Kaganskiy1, Michael Mattes2, Samel Arslanagić2, Stephen Reitzenstein1, and Niels Gregersen31Institut für Festkörperphysik, TU Berlin, Germany — 2Department of Electrical Engineering, Technical University of Denmark, Denmark — 3Department of Photonics Engineering, Technical University of Denmark , Denmark

In quantum technology, the two-photon interference acts as an important role related to the indistinguishability of single-photon. One approach to improve the indistinguishability of single-photon is to enhance the spontaneous emission into cavity mode by Purcell effect. In this regard, nanobeam cavities, are promising candidates because they can easily be integrated with other on-chip components. In this contribution, we optimize the geometrics of nanobeam cavities. A numerically optimized nanobeam cavity design yields a high directional spontaneous emission β factor of 0.73 with broadband enhancement of 9 nm. The nanobeam cavity containing embedded InGaAs/GaAs quantum dots fabricated structures demonstrates the cavity effect. By micro-photoluminescence (µPL) characterization, three distinct Fabry-Pérot resonance peaks as well as cavity effects are observed. Due to the Purcell enhancement from the cavity, the spontaneous emission rate of a resonance (non-resonance) peak is (1.59 * 0.09) ns−1 [(1.14 * 0.14) ns−1], indicating the potential of nanobeam cavity for full on-chip single-photon source.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2021 > SKM