👉 Unentangled is a concept in quantum mechanics that refers to the state of being in an absolute, non-mechanical and indistinguishable state. In this state, particles are considered as if they were separated from each other but not physically separated. This can happen when two particles are so close that their quantum states do not overlap or overlap only at a very small angle. Unentangled systems are often used in quantum computing to simulate non-local operations, where the outcome of one operation does not