Quantum-Meme Cryptography
What is quantum cryptography and why should you care? Do you ever wonder what happens when you send a message to a person? How does your string of texts and cat memes fly off and into the other person’s phone? It's almost magic. An important part of this magic is that it's secure. Even if someone listens to this communication, they would not be able to read your message. Instead, what they see is a large chunk of encrypted information that they can’t read. To be able to read this, they need a special key, one that only you and your friend have. This works for now, sending and receiving messages where only the two ends have the right keys to access the data. There is one problem: quantum computers! You have probably heard that they are very fast. In fact, recently, Google solved a task that would have taken 10,000 years to complete on their fastest computer in about 200 seconds. Now let's get back to our two keys. Yes, quantum computers can try keys very, very fast. Think of...