QSWITCH: Quantum switch for single photons based on semiconductor quantum dots

Project funded by French National Research Agency (ANR), grant ANR-07-BLAN-0259. Participating organisations named by the source: THALES RESEARCH & TECHNOLOGY; Thales Research & Technology; COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES and 2 more. Funded amount: EUR 349,940, as stated by the source. Runs 2008-01-09 to n/a. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2019-12-24); national funding data, not CORDIS. Abstract given by the source: The aim of the QSWITCH project is the realization of a quantum switch for single photons. This device is an ultimate version of a light switch where a single photon fixes the on or off state. The fabrication of this switch is based on a system in the strong coupling regime where a single quantum dot is embedded in the cavity mode of a photonic crystal. The device non-linearity stems from the anharmonicity of the quantum eigenstates spectrum with the number of photons in the cavity mode. This effect is referred to as photon blockade which is based on the fundamental quantum properties of cavity quantum electrodynamics. The implementation of this scheme in solid state is accessible thanks to the fermionic statistics of the excitations in a quantum dot and the high-quality factor of small mode volume photonic crystal nanocavities.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of French National Research Agency (ANR). Retrieved 2026-10-22. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The QSWITCH project, funded by the French National Research Agency with EUR 349,940, aims to develop a quantum switch for single photons using semiconductor quantum dots. It involves organizations like THALES RESEARCH & TECHNOLOGY and COMMISSARIAT A L ENERGIE ATOMIQUE. Suggested technology pillar: communication. Generated by AI from the public source text; it may contain errors and the original source is authoritative.