Report

Teaser, summary, work performed and final results

Periodic Reporting for period 2 - SEAQUEL (Structured Ensembles of Atoms for Quantum Engineering of Light)

Teaser

Engineering complex quantum system out of elementary quantum objects such as atoms or photons can boost the speed of some computations, help transmitting confidential information safely, or enhance te precision of measurement devices. Among existing elementary quantum bricks...

Summary

Engineering complex quantum system out of elementary quantum objects such as atoms or photons can boost the speed of some computations, help transmitting confidential information safely, or enhance te precision of measurement devices. Among existing elementary quantum bricks, photons are the only ones that can be transmitted over large distances, but they cannot efficiently interact with each other to form a complex object. Our project aims at circumventing this issue by combining tecniques from several branches of quantum engineering.

Work performed

We designed a new experimental platform for quantum engineering of light, aiming at creating and controlling strong interactions between optical photons. This platform, in its final stage of assembly, will allow us to test fundamental theorems in quantum logic, efficiently create non-classical light for precision measurements, and use photons to emulate highly-correlated quantum systems central to condensed-matter physics.

Final results

This project aims at building a new versatile platform for quantum engineering of light, with the unique ability to create deterministic coherent photon-photon interactions tunable in range, strength and dimensionality. This flexible, efficient, dynamically-controlled system will be used to test the limits of fundamental no-go theorems in quantum logic, measure physical quantities inaccessible to standard detectors, and deterministically engineer non-classical light beams for precision sensing. Ultimately, it will give access to a yet unexplored regime where intracavity photons form a strongly correlated quantum fluid, with spatial and temporal dynamics ideally suited to perform real-time, single-particle-resolved simulations of non-trivial topological effects appearing in condensed-matter systems.