Time crystals created in Google’s quantum processor

Time crystals sound like something a video game character would be trying to collect, but this bizarre phase of matter is very real – and now one of them has been created in Google’s quantum processor, Sycamore.Continue ReadingCategory: Physics, Scienc… Continue reading Time crystals created in Google’s quantum processor

Could someone bypass a GPG key’s expiration date by simply using that key on a computer with an incorrect system time?

I’ve heard it’s good for security to have a shorter expiration time for GPG keys, but I’m still not clear on why that is exactly. Is the purpose of a GPG key mainly to inform the legitimate user that they ought to generate a key at some p… Continue reading Could someone bypass a GPG key’s expiration date by simply using that key on a computer with an incorrect system time?