Quantum Dots: Tiny Emitters of Pure Light
Unlocking the Potential: Quantum Dots as Single-Photon Emitters The world of quantum mechanics is filled with mind-bending concepts, but perhaps none is as intriguing as the single photon. This fundamental unit of light holds immense promise for revolutionizing fields like communication, computing, and sensing. But generating these elusive particles reliably has been a technological hurdle. Enter quantum dots (QDs), tiny semiconductor nanocrystals that are rewriting the rules of light manipulation. What makes QDs so special? Imagine a microscopic lightbulb, capable of emitting photons on demand, each with a precisely defined color and energy. That's essentially what a QD can do. These "quantum lighthouses" owe their unique abilities to quantum confinement, a phenomenon where electrons are trapped within the tiny dimensions...