Glossary

The nanocosmos refers to the extremely small realm of matter on the scale of nanometers, or billionths of a meter (1 nm = 10⁻⁹ meters). This realm encompasses atoms, molecules, and structures smaller than 100 nanometers. The nanocosmos is important in fields such as nanotechnology, biology, and physics because special effects occur here that are not visible in the “normal” world, such as quantum phenomena and altered material properties.

The no-cloning theorem is a fundamental law of quantum mechanics that states it is impossible to perfectly copy an unknown quantum state. This is important for quantum communication because it ensures that information cannot be duplicated or intercepted without being detected. Any attempt to copy a qubit results in a disturbance of the system and makes the eavesdropping attempt detectable.