Quantum information is the use of quantum mechanical phenomena such as entanglement and superposition to process information. It is an emerging interdisciplinary field that combines physics, computer science, mathematics, and engineering. It has applications in many areas of science and technology, including cryptography, computing, communication, and sensing. Quantum information is based on the principles of quantum mechanics, which describe how particles interact with each other at a subatomic level. In particular, quantum entanglement allows two or more particles to be linked together in such a way that they share the same quantum state. This allows for the transmission of information with greater security and efficiency than traditional methods.