Fiber-coupled, on-demand single-photon source

Purpose and goal

The aim of the project is to develop a fiber-coupled, on-demand source of single-photons emitting at telecom wavelengths. The device is based on quantum dots embedded within a nanowires and integrated directly inside the core of a pre-machined optical fiber. Our goal is to build a scalable, compact, and reliable single-photon source with high performance in terms of brightness, purity, and indistinguishability, ultimately facilitating advancements in quantum technologies

Expected effects and result

The expected results include build the first prototype of the single-photon source. The prototype is expected to achieve a count rate above 1 MHz, purity over 90%, and photon indistinguishability with post-selected visibility over 90%. With such performance, this device can be utilized for a wide range of quantum applications, such as quantum communication and computing applications.

Planned approach and implementation

The project will be executed in three phases: Prototype Development, where the fully integrated, fiber-coupled single-photon device will be created; Testing and Validation, involving the characterization of the device´s optical properties and optimization of the integration process, which will be carried out in cooperation with Quantum Scopes AB; and Quantum Communication Demonstration, where the device will be used to demonstrate quantum communication protocols in collaboration with industry partners, including real-world testing using deployed optical fibers.