Periodically arranged atomic structures exhibit specific light scattering properties, i.e., Bragg reflection, super-, sub- and even selective radiance. These unique features promise important quantum technology applications, such as efficient and reliable quantum switches and memories. Current experimental realizations include chains of individual atoms trapped close to an optical nanofiber and 1D ordered arrays of atomic clouds trapped in optical lattices. Though of different physical natures, these two platforms share strong similarities. The project 1DOrder will reveal and harness these similarities to push the two platforms forward and enter the quantum technology realm with ordered atomic arrays in a Bragg configuration. To this end, the consortium will take advantage of the unique experimental setups developed at LKB and INPHYNI and of the expertise of LCAR theory partner in quantum optics and atomic physics.

Specifically, the project will target the following tasks:

• The technical upgrade of the experimental platforms at INPHYNI and LKB. 

• The development of dedicated theoretical tools for an accurate and full description of ordered one-dimensional atomic ensembles.

• The theoretical design and characterization of new protocols for high-fidelity quantum memories and enhanced non-linear quantum interactions using the unique features of the interaction of light and ordered atomic ensembles.

• The laboratory implementation of these scenarios.

The emergence of new and resource-efficient quantum memory and gate protocols can only result from the joint efforts of theory and experiment partners working in close collaboration. Because it gathers internationally recognized experts in quantum optics and atomic physics, theory and experiment, 1DOrder constitutes a unique opportunity in France to push this promising light-atom array paradigm towards its implementation for quantum information processing.