851 citations · 11.3k across the 104 of their papers we have counts for
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Quantum common causes and quantum causal models
John-Mark A. Allen, Jonathan Barrett, Dominic C. Horsman +2
Reichenbach's principle asserts that if two observed variables are found to be correlated, then there should be a causal explanation of these correlations. Furthermore, if the expl…
Can a quantum state over time resemble a quantum state at a single time?
Dominic Horsman, Chris Heunen, Matthew F. Pusey +2
Standard quantum theory represents a composite system at a given time by a joint state, but it does not prescribe a joint state for a composite of systems at different times. If a…
Quantum-coherent mixtures of causal relations
Jean-Philippe W. MacLean, Katja Ried, Robert W. Spekkens +1
Understanding the causal influences that hold among parts of a system is critical both to explaining that system's natural behaviour and to controlling it through targeted interven…
Quantum circuit dynamics via path integrals: Is there a classical action for discrete-time paths?
Mark D. Penney, Dax Enshan Koh, Robert W. Spekkens
It is straightforward to give a sum-over-paths expression for the transition amplitudes of a quantum circuit as long as the gates in the circuit are balanced, where to be balanced…
How to quantify coherence: Distinguishing speakable and unspeakable notions
Iman Marvian, Robert W. Spekkens
Quantum coherence is a critical resource for many operational tasks. Understanding how to quantify and manipulate it also promises to have applications for a diverse set of problem…