A friend of mine recently suggested a documentary to me about the mind’s healing power. Terrible pseudoscience all around, but it landed some nice points about stress. Nevertheless, I was horrified at how easy the word quantum was dropped, without any context, and any reason. And this is not an isolated event, I have seen this trend for some time. And I think that is not only a trend in the circles of pseudoscience. In science-fiction and superhero movies for instance, quantum jargon is used as mumbojumbo and plot devices, admittedly a whole more harmless way. However, with buzzwords like quantum healing or quantum consciousness on the rise, we physicists must take a stand and clarify what does the word quantum really mean.
Continue reading “What is Quantum?”
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?
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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?
Continue reading “Scotty – Quantum beam me up!”