The BB84 Protocol is a way for two people to send secret messages using tiny particles of light called photons. It helps them make sure nobody else can listen to their secret chat by checking if the photons get changed when someone tries to peek at them.

BB84 Protocol

secret messages

tiny particles of light

Photons are the fundamental particles of light and electromagnetic radiation, possessing both wave-like and particle-like properties, which allows them to exhibit phenomena such as interference and diffraction. They are massless, travel at the speed of light, and are responsible for mediating electromagnetic forces between charged particles.

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