Everybody's physics
Give me a moment of your day, and let me put a picture in your mind. Imagine you and a friend each have a soup in a plate, and each soup has two carrot pieces, one potato and not so much broth in it. You are bored, it is a slow afternoon, so you decide to perform a little experiment.
How quantum technologies enable uncrackably secure communication.
In our modern computer world, being able to encrypt messages is not only necessary to keep some information secret from others, but is a key part of technologies such as cryptocurrencies like Bitcoin. Furthermore, the scandals around widespread eavesdropping of intelligence agencies has shown the world that in fact none of the routines used today are really secure. But what if I told you that in ten years all communication will be secure because it is physically impossible to eavesdrop on communication encrypted by quantum cryptography?
How information can be teleported through the two most counter-intuitive properties of quantum mechanics.
We all know the quantum world is weird, but in no place does it become as weird as in the protocol allowing almost instant transportation of information from one place to the other termed “quantum teleportation”. That may sound like its impossible – but what if I tell you that this can even be done without the recipient of the information knowing? And that this technology is about to make communication absolutely eavesdrop-safe?
Science can be sometimes daunting for the unexperienced. Have you ever seen a scientific talk, or read a paper? There tends to be a lot of jargon flying around, circling the speaker to then buzz aggressively around the audience before it goes out the windows into the oblivion of the coffee break.
Continue reading “The Hitchhikers Guide to Many Body Physics” →
We really should have started with some fancy quote, spoken in the past, and reverberating into the ages to come. But we didn’t. So let’s start instead with a small experiment. Fill a cup with something. No, not coffee, we know you were thinking about it. Something clear. You need to see through it. You also need to have some little pieces of something floating homogeneously around in your cup, like chia seeds once they are really squishy, or that weird aloe drink they sell at the supermarket. The latter, in fact, proves to be the best for this experiment.
Many Body Physics