Olga Goulko, an assistant professor of physics, had a co-authored paper “Globe-hopping” accepted to the journal Proceedings of the Royal Society A.
About the article: John Bell famously showed in 1964 that classical theories fitting naturally with Einstein’s special relativity cannot explain some predictions of quantum theory. The researchers explore simple new versions of Bell’s result involving completely randomly chosen measurements, illustrating the importance of randomness in science and technology.
Interestingly, to construct such general Bell inequalities requires solving an intriguing geometrical puzzle. The researchers show that classical models can almost always come closer to mimicking quantum correlations than previously known. Their results advance the understanding of quantum nonlocality as a resource and suggest tests and techniques for improving the security of quantum cryptosystems.