Single photon emission from individual nanophotonic-integrated colloidal quantum dots

Abstract

Solution processible colloidal quantum dots hold great promise for realizing single-photon sources embedded into scalable quantum technology platforms. However, the high-yield integration of large numbers of individually addressable colloidal quantum dots in a photonic circuit has remained an outstanding challenge. Here, we report on integrating individual colloidal core-shell quantum dots (CQDs) into a nanophotonic network that allows for excitation and efficient collection of single-photons via separate waveguide channels. An iterative electron beam lithography process provides a viable method to position single emitters at predefined positions in a photonic integrated circuit with yield that approaches unity. Our work moves beyond the bulk optic paradigm of confocal microscopy and paves the way for supplying chip-scale quantum networks with single photons from large numbers of simultaneously controllable quantum emitters.

17 pages, 10 figures

References in corpus (5)

• Secure Quantum Key Distribution
• Integrated quantum photonics with silicon carbide: challenges and prospects
• Integrated Single Photon Emitters
• All-optical fluorescence blinking control in quantum dots with ultrafast mid-infrared pulses
• Coherent coupling of single molecules to on-chip ring resonators

Cited by in corpus (4)

• All-Optical Spin Initialization via a Cavity Broadened Optical Transition in On-Chip Hybrid Quantum Photonics
• Waveguide Excitation and Spin Pumping of Chirally Coupled Quantum Dots
• Mechanisms and Opportunities for Tunable High-Purity Single Photon Emitters: A Review of Hybrid Perovskites and Prospects for Bright Squeezed Vacuum
• Modelling spatio-temporal dynamics of chiral coupling of quantum emitters to light fields in nanophotonic structures