215 citations · 1.1k across the 39 of their papers we have counts for
40 papers
Bounding Classical and Quantum Correlations in Bayesian Networks with Quasiprobabilities
Paul Becsi, Matty J. Hoban
Bell's theorem reveals that quantum theory is in tension with classical causal reasoning and, in particular, the notion of local causality. This is now understood as a particular e…
Activation of post-quantumness in bipartite generalised EPR scenarios
Beata Zjawin, Matty J. Hoban, Paul Skrzypczyk +1
In a standard bipartite Einstein-Podolsky-Rosen (EPR) scenario, Alice and Bob share a system prepared in an entangled state and Alice performs local measurements. One possible gene…
Activation of post-quantum steering
Ana Belén Sainz, Paul Skrzypczyk, Matty J. Hoban
There are possible physical theories that give greater violations of Bell's inequalities than the corresponding Tsirelson bound, termed post-quantum non-locality. Such theories do…
Proceedings 19th International Conference on Quantum Physics and Logic
Stefano Gogioso, Matty Hoban
This volume contains the proceedings of the 19th International Conference on Quantum Physics and Logic (QPL 2022), which was held June 27-July 1, 2022 at Wolfson College, Universit…
The resource theory of nonclassicality of channel assemblages
Beata Zjawin, David Schmid, Matty J. Hoban +1
When two parties, Alice and Bob, share correlated quantum systems and Alice performs local measurements, Alice's updated description of Bob's state can provide evidence of nonclass…
A hierarchy of semidefinite programs for generalised Einstein-Podolsky-Rosen scenarios
Matty J. Hoban, Tom Drescher, Ana Belén Sainz
Correlations in Einstein-Podolsky-Rosen (EPR) scenarios, captured by \textit{assemblages} of unnormalised quantum states, have recently caught the attention of the community, both…
The power of qutrits for non-adaptive measurement-based quantum computing
Jelena Mackeprang, Daniel Bhatti, Matty J. Hoban +1
Non-locality is not only one of the most prominent quantum features but can also serve as a resource for various information-theoretical tasks. Analysing it from an information-the…
On characterising assemblages in Einstein-Podolsky-Rosen scenarios
Vinicius P. Rossi, Matty J. Hoban, Ana Belén Sainz
Characterising non-classical quantum phenomena is crucial not only from a fundamental perspective, but also to better understand its capabilities for information processing and com…
Quantum networks self-test all entangled states
Ivan Šupić, Joseph Bowles, Marc-Olivier Renou +2
Certifying quantum properties with minimal assumptions is a fundamental problem in quantum information science. Self-testing is a method to infer the underlying physics of a quantu…
Quantifying EPR: the resource theory of nonclassicality of common-cause assemblages
Beata Zjawin, David Schmid, Matty J. Hoban +1
Einstein-Podolsky-Rosen (EPR) steering is often (implicitly or explicitly) taken to be evidence for spooky action-at-a-distance. An alternative perspective on steering is that Alic…
Certified Randomness From Steering Using Sequential Measurements
Brian Coyle, Elham Kashefi, Matty Hoban
The generation of certifiable randomness is one of the most promising applications of quantum technologies. Furthermore, the intrinsic non-locality of quantum correlations allow us…
Correlations for computation and computation for correlations
Bülent Demirel, Weikai Weng, Christopher Thalacker +2
Quantum correlations are central to the foundations of quantum physics and form the basis of quantum technologies. Here, our goal is to connect quantum correlations and computation…
Postquantum common-cause channels: the resource theory of local operations and shared entanglement
David Schmid, Haoxing Du, Maryam Mudassar +3
We define the type-independent resource theory of local operations and shared entanglement (LOSE). This allows us to formally quantify postquantumness in common-cause scenarios suc…
On estimating the entropy of shallow circuit outputs
Alexandru Gheorghiu, Matty J. Hoban
Estimating the entropy of probability distributions and quantum states is a fundamental task in information processing. Here, we examine the hardness of this task for the case of p…
Self-testing and certification using trusted quantum inputs
Ivan Šupić, Matty J. Hoban, Laia Domingo Colomer +1
Device-independent certification of quantum devices is of crucial importance for the development of secure quantum information protocols. So far, the most studied scenario correspo…
The complexity of compatible measurements
Paul Skrzypczyk, Matty J. Hoban, Ana Belén Sainz +1
Measurement incompatibility is one of the basic aspects of quantum theory. Here we study the structure of the set of compatible -- i.e. jointly measurable -- measurements. We are i…
Bipartite post-quantum steering in generalised scenarios
Ana Belén Sainz, Matty J. Hoban, Paul Skrzypczyk +1
The study of stronger-than-quantum effects is a fruitful line of research that provides valuable insight into quantum theory. Unfortunately, traditional bipartite steering scenario…
Certified Quantum Random Numbers from Untrusted Light
David Drahi, Nathan Walk, Matty J. Hoban +8
A remarkable aspect of quantum theory is that certain measurement outcomes are entirely unpredictable to all possible observers. Such quantum events can be harnessed to generate nu…
One-Sided Device-Independent Certification of Unbounded Random Numbers
Brian Coyle, Matty J. Hoban, Elham Kashefi
The intrinsic non-locality of correlations in Quantum Mechanics allow us to certify the behaviour of a quantum mechanism in a device independent way. In particular, we present a ne…
A simple protocol for fault tolerant verification of quantum computation
Alexandru Gheorghiu, Matty J. Hoban, Elham Kashefi
With experimental quantum computing technologies now in their infancy, the search for efficient means of testing the correctness of these quantum computations is becoming more pres…
Entangled systems are unbounded sources of nonlocal correlations and of certified random numbers
Florian J. Curchod, Markus Johansson, Remigiusz Augusiak +3
The outcomes of local measurements made on entangled systems can be certified to be random provided that the generated statistics violate a Bell inequality. This way of producing r…
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…