210 citations · 653 across the 17 of their papers we have counts for
5 papers · 1 filter
Towards device-independent information processing on general quantum networks
Ciarán M. Lee, Matty J. Hoban
The violation of certain Bell inequalities allows for device-independent information processing secure against non-signalling eavesdroppers. However, this only holds for the Bell n…
Ruling out higher-order interference from purity principles
Howard Barnum, Ciarán M. Lee, Carlo Maria Scandolo +1
As first noted by Rafael Sorkin, there is a limit to quantum interference. The interference pattern formed in a multi-slit experiment is a function of the interference patterns for…
Oracles and query lower bounds in generalised probabilistic theories
Howard Barnum, Ciarán M. Lee, John H. Selby
We investigate the connection between interference and computational power within the operationally defined framework of generalised probabilistic theories. To compare the computat…
The computational landscape of general physical theories
Jonathan Barrett, Niel de Beaudrap, Matty J. Hoban +1
There is good evidence that quantum computers are more powerful than classical computers, and that various simple modifications of quantum theory yield computational power that is…
A no-go theorem for theories that decohere to quantum mechanics
Ciarán M. Lee, John H. Selby
To date, there has been no experimental evidence that invalidates quantum theory. Yet it may only be an effective description of the world, in the same way that classical physics i…