3 papers
quant-ph2021
Quantum theory cannot violate a causal inequality
Tom Purves, Anthony J. Short
Within quantum theory, we can create superpositions of different causal orders of events, and observe interference between them. This raises the question of whether quantum theory…
quant-ph2020
The operational significance of the quantum resource theory of Buscemi nonlocality
Patryk Lipka-Bartosik, Andrés Ducuara, Tom Purves +1
Although entanglement is necessary for observing nonlocality in a Bell experiment, there are entangled states which can never be used to demonstrate nonlocal correlations. In a sem…
quant-ph2018
Tripartite non-classical correlations without backwards in time signalling
Tom Purves, Anthony J. Short
We investigate the relationship between no backwards in time signaling and classically causal correlations. We discover that unlike the case for two parties, the no backwards in ti…