2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/90022The discovery of an algorithm for factoring which runs in polynomial time on a quantum computer has given rise to a concerted effort to understand the principles, advantages, and limitations of quantum computing. At the same time, many different quantum systems are being explored for their suitability to serve as a physical substrate for the quantum computer of the future. I discuss some of the theoretical foundations of quantum computer science, including algorithms and error correction, and present a few physical systems that have shown promise as a quantum computing platform. Finally, we discuss a spin-off of the quantum computing revolution: quantum technologies.7 pages, 4 figuresQuantum Physicstext