Quantum Computation and Information Seminar 

24/07/2009, 15:00 — 16:00 — Room P4.35, Mathematics Building
Juan Garcia Escartin, U Valladolid

Quantum Computer Networks

Quantum computation and communications offer a new range of possibilities for information processing. However, there is relatively little work on the application of quantum information to computer network issues. In this talk, I will show how the existing quantum communication protocols fit into the classical layered model for computer networks and argue that quantum computer networks can outperform their classical counterparts for some tasks. Two new applications will be presented for the network and the data link layer: a delayed commutation protocol and a quantum multiple access technique. The delayed commutation protocol gives a quantum solution to the processing delay problem in packet switching networks. Hilbert Space Division Multiple Access, HDMA, is proposed as a quantum theory of multiple access.