Quantum Key Distribution is an applied encryption method based also on the laws of quantum physics, which uses quantum random number generators to create a completely secure key, that is used only once between 2 parties to share information.
The key is created by encoding its random bits into photons and transmitted via current telecom fiber optics networks or even through free space. Having this random key And adding it, bit to bit, to your string of data Is proven to be an ultra-secure method when transmitting sensitive data between two locations, such as banks, hospitals or governmental buildings and providing long time protection of our data even to quantum computers.