Zasilane elektrycznie kompaktowe źródła pojedynczych fotonów pracujące w temperaturze pokojowej

The project aims to develop a new type of single-photon source that operates at room temperature and is electrically excited. This source holds potential for both scientific research and quantum telecommunications, particularly in quantum key distribution. Currently available commercial single-photon sources are primarily based on parametric conversion. Their limitations include the lack of "on-demand" emission, relatively low efficiency, and the necessity of external laser pumping, which hinders miniaturization and increases power consumption. The single-photon source proposed in this project will enable the device to be reduced to millimeter dimensions by eliminating the need for external pumping lasers or cryostats. The device will emit single photons "on demand" and allow for efficient coupling with external optical systems. The breakthrough properties of this device will be ensured by a hybrid structure, in which a nitride laser or a resonant diode is integrated with a photonic structure containing an hBN layer with quantum emitters. Maximizing photon extraction will be achieved through the Purcell effect, which, in an optimal scenario, will allow for the indistinguishability of emitted photons. The project builds upon the existing achievements and experience of the team, which has developed the first prototype hybrid single-photon sources based on transition metal dichalcogenides and boron nitride. The team possesses experience in working with hybrid nitride diode structures, exfoliated semiconductors, and advanced methods for designing photonic structures. The project is supported by existing intellectual property, specifically the patent titled "Hybrid light-emitting diode emitting single photons and method for producing a hybrid light-emitting diode emitting single photons" (EP4239694).