Experiments on programmable arrays of Rydberg atoms

The startup Pasqal is developing a quantum computing platform made of controllable arrays of neutral atoms. We will present here the main characteristics of these devices and illustrate how applications ranging from classification tasks to simulation of quantum systems can be explored at the analog level (programming Hamiltonian sequences). We will also report on recent progress in scaling up the number of qubits. Based on extended atomic lifetime and optimized trap loading equalization procedure, we have been able to generate arrays with more than 300 atoms while maintaining high accuracy of defect-free realizations. These results are the first step towards neutral-atom quantum processors with more than a thousand particles.