We build Programmable Quantum Simulators and Quantum Computers made of 2D and 3D Atomic Arrays. Neutral atoms trapped in optical tweezers and addressed with laser beams are ideal indistinguishable quantum systems to realize superposition and entanglement, at the heart of powerful Quantum Information Processing. It is a highly scalable platform, benefiting from tens of years of development which has brought some of contemporary physics'​ most spectacular achievements: Bose-Einstein condensation, cavity quantum electrodynamics, etc. We develop the lasers, the vacuum technology, the electronic controls and the software stack to make the individual atoms accessible to quantum programmers worldwide.