Stimulated emission is a process in quantum physics where an incoming photon interacts with an excited atom or molecule, causing it to release a second photon. This second photon has the same frequency, phase, direction, and polarization as the incoming photon. The concept of stimulated emission is fundamental to the operation of lasers (Light Amplification by Stimulated Emission of Radiation), as it enables the amplification of light. In cybersecurity, understanding stimulated emission is important when discussing quantum cryptography and quantum key distribution, as these technologies may use lasers or similar photon-based systems. While not a direct cybersecurity threat, knowledge of stimulated emission helps professionals understand the underlying technology of secure quantum communications.