Tristan Benoist and I have just arXived our paper On bipartite unitary matrices generating subalgebra--preserving quantum operations. We characterize the set of bipartite unitary operators which give quantum operations preserving some subalgebra of the state space, independently of the state of the coupled environment. The main results in the paperContinue reading
RT @sigfpe I've been meaning to plot this for ages. I'm guessing it's something everyone who takes an information theory course does - but I haven't. I hope the labels make it self-explanatory. (Markov source next if I find a spare moment...) pic.twitter.com/ZlkmwrgtNf
New paper from Cuesta and Wolf arxiv.org/abs/1812.10019 : Are almost-symmetries almost linear? It d-pends...