It is well known that no information can be transmitted faster than light, and it is also known that quantum information cannot be cloned or copied arbitrarily. These two "laws" place restrictions on the transmission of information through spacetime, but are there other limitations? The answer is no: the only such restrictions are (1) no-signalling (faster- than-light communication), and (2) no-cloning of quantum information. In this talk, This talk will first provide a brief introduction to some fundamentals of quantum information theory (including the no-cloning theorem and quantum error correction), and then it will show that any process that transmits information through spacetime without violating (1) or (2) is physically realizable as a so-called spacetime information replication task. In particular, this talk will describe how one can succeed at distributing information in seemingly impossible ways using quantum error correction, and showcase new, continuous variable quantum error correcting codes that can efficiently replicate information in spacetime.
6-6:30pm - Check-in, Refreshments & Networking
6:30-7:30pm - Detailed Abstract
7:30-7:45pm - Q&A
Grant Salton is a PhD candidate at the Stanford Institute for Theoretical Physics. His research interests include quantum information theory and quantum gravity, and he is particularly interested in questions at the intersection of the two fields. Grant is a Canadian physicist, with a bachelor's degree from the University of Waterloo, Waterloo, Ontario, and master's degrees from McGill University, Montreal, Quebec and Stanford. He joined the Stanford community in 2013.