Print Email Facebook Twitter Integration of Colloidal PbS/CdS Quantum Dots with Plasmonic Antennas and Superconducting Detectors on a Silicon Nitride Photonic Platform Title Integration of Colloidal PbS/CdS Quantum Dots with Plasmonic Antennas and Superconducting Detectors on a Silicon Nitride Photonic Platform Author Elsinger, Lukas (Universiteit Gent) Gourgues, R.B.M. (Single Quantum) Esmaeil Zadeh, I.Z. (TU Delft ImPhys/Optics) Maes, Jorick (Universiteit Gent) Guardiani, A. (Single Quantum) Bulgarini, G. (Single Quantum) Pereira, S.F. (TU Delft ImPhys/Optics) Dorenbos, S.N. (Single Quantum) Zwiller, V.G. (KTH Royal Institute of Technology) Date 2019 Abstract Single-photon sources and detectors are indispensable building blocks for integrated quantum photonics, a research field that is seeing ever increasing interest for numerous applications. In this work, we implemented essential components for a quantum key distribution transceiver on a single photonic chip. Plasmonic antennas on top of silicon nitride waveguides provide Purcell enhancement with a concurrent increase of the count rate, speeding up the microsecond radiative lifetime of IR-emitting colloidal PbS/CdS quantum dots (QDs). The use of low-fluorescence silicon nitride, with a waveguide loss smaller than 1 dB/cm, made it possible to implement high extinction ratio optical filters and low insertion loss spectrometers. Waveguide-coupled superconducting nanowire single-photon detectors allow for low time-jitter single-photon detection. To showcase the performance of the components, we demonstrate on-chip lifetime spectroscopy of PbS/CdS QDs. The method developed in this paper is predicted to scale down to single QDs, and newly developed emitters can be readily integrated on the chip-based platform. Subject Colloidal quantum dotshybrid integrated photonicsplasmonic antennassuperconducting nanowire single photon detector To reference this document use: http://resolver.tudelft.nl/uuid:454fe294-2f27-49db-ba07-d3167bc5cb78 DOI https://doi.org/10.1021/acs.nanolett.9b01948 Embargo date 2020-07-07 ISSN 1530-6984 Source Nano Letters: a journal dedicated to nanoscience and nanotechnology, 19 (8), 5452-5458 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2019 Lukas Elsinger, R.B.M. Gourgues, I.Z. Esmaeil Zadeh, Jorick Maes, A. Guardiani, G. Bulgarini, S.F. Pereira, S.N. Dorenbos, V.G. Zwiller, More Authors Files PDF cQD_SNSPD_onSiN_main.pdf 12.79 MB Close viewer /islandora/object/uuid:454fe294-2f27-49db-ba07-d3167bc5cb78/datastream/OBJ/view