Giant atoms - a new regime in quantum optics

Project funded by Swedish Research Council (Grant for positions or stipends), grant 2019-03696_VR. Participating organisations named by the source: Chalmers University of Technology. Funded amount: SEK 3,200,000, as stated by the source. Runs 2020-01-01 to 2023-12-31. Keywords: Naturvetenskap, Natural Sciences, Fysik, Physical Sciences, Atom- och molekylfysik och optik, Atom and Molecular Physics and Optics. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-12-06); national funding data, not CORDIS. Abstract given by the source: This project is a theoretical study of a new fundamental regime in quantum optics: giant atoms. It is almost always assumed that atoms can be approximated as point-like when compared to the wavelength of light (photons) they interact with. This standard approximation has now been challenged in experiments, where superconducting quantum bits couple to sound waves or light at multiple discrete coupling points spaced wavelengths apart. The key attribute of giant atoms is that the multiple coupling points give rise to interference effects. Since many well-known phenomena in quantum optics rely on interference, the purpose of this project is to find such known phenomena that can be enhanced by replacing small atoms with giant ones. In particular, I aim to use giant atoms for superradiance (enhanced light emission) and for production of non-classical states of light. I will recruit 1 PhD student to conduct theoretical studies, during 4 years, of quantum-optics setups with giant atoms and their applications in quantum technologies. I will also use existing collaborations with both experimental and theoretical groups to test new ideas for giant atoms.This work has a high potential impact. The ability to manipulate light and matter at the quantum level, developed in quantum optics over the past decades, now underpins important existing (e.g., the laser) and emerging quantum technologies (e.g., quantum computing and quantum sensing), which may be further improved with giant atoms.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Swedish Research Council. Retrieved 2026-10-28. 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 project "Giant atoms - a new regime in quantum optics" is funded by the Swedish Research Council with SEK 3,200,000 from 2020 to 2023. It explores the theoretical implications of giant atoms in quantum optics, challenging traditional approximations. Suggested technology pillar: enabling. Generated by AI from the public source text; it may contain errors and the original source is authoritative.