Quantum photonics is the practical application of quantum optics (the theoretical study of photons, which are the quantum of light) for the development of new technologies. Quantum photonics includes different fields such as quantum computing, quantum metrology and quantum cryptography. In this post, we provide a first approach to this domain in a simple way, describing some of its basic concepts, such as the qubit and some of its properties, like the superposition or the quantum entanglement.
