12 citations · 12 across the 1 of their papers we have counts for
9 papers
Analysing causal structures in generalised probabilistic theories
Mirjam Weilenmann, Roger Colbeck
Causal structures give us a way to understand the origin of observed correlations. These were developed for classical scenarios, but quantum mechanical experiments necessitate thei…
Theories with no superluminal signaling have greater information-processing power than theories with no superluminal causation
V. Vilasini, Roger Colbeck
A central goal in the foundations of physics is to understand the structure of physical theories, such as quantum theory, from physical principles. This is often explored by consid…
Higher rates for semi-device-independent randomness expansion by recycling input randomness
Rutvij Bhavsar, Hamid Tebyanian, Roger Colbeck
Although quantum random number generators rely on the inherent indeterminism of quantum mechanics, ensuring that the numbers produced are secure remains a significant challenge. We…
Improved device-independent randomness expansion rates using two sided randomness
Rutvij Bhavsar, Sammy Ragy, Roger Colbeck
A device-independent randomness expansion protocol aims to take an initial random string and generate a longer one, where the security of the protocol does not rely on knowing the…
Closing the problem of which causal structures of up to six total nodes have a classical-quantum gap
Shashaank Khanna, Matthew Pusey, Roger Colbeck
The discovery of Bell that there exist quantum correlations that cannot be reproduced classically is one of the most important in the foundations of quantum mechanics, as well as h…
Expanding bipartite Bell inequalities for maximum multi-partite randomness
Lewis Wooltorton, Peter Brown, Roger Colbeck
Nonlocal tests on multi-partite quantum correlations form the basis of protocols that certify randomness in a device-independent (DI) way. Such correlations admit a rich structure,…