215 citations · 1.1k across the 39 of their papers we have counts for
6 papers · 1 filter
Equivalence of relativistic causal structure and process terminality
Aleks Kissinger, Matty Hoban, Bob Coecke
In general relativity, `causal structure' refers to the partial order on space-time points (or regions) that encodes time-like relationships. Recently, quantum information and quan…
A formalism for steering with local quantum measurements
A. B. Sainz, L. Aolita, M. Piani +2
We develop a unified approach to classical, quantum and post-quantum steering. The framework is based on uncharacterised (black-box) parties performing quantum measurements on thei…
A channel-based framework for steering, non-locality and beyond
Matty J. Hoban, Ana Belén Sainz
Non-locality and steering are both non-classical phenomena witnessed in Nature as a result of quantum entanglement. It is now well-established that one can study non-locality indep…
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…
Non-Unitary Quantum Computation in the Ground Space of Local Hamiltonians
Naïri Usher, Matty J. Hoban, Dan E. Browne
A central result in the study of Quantum Hamiltonian Complexity is that the k-Local hamiltonian problem is QMA-complete. In that problem, we must decide if the lowest eigenvalue of…
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…