522 citations · 3.4k across the 56 of their papers we have counts for
9 papers · 1 filter
Genuine Multipartite Entanglement in Time
Simon Milz, Cornelia Spee, Zhen-Peng Xu +3
While spatial quantum correlations have been studied in great detail, much less is known about the genuine quantum correlations that can be exhibited by temporal processes. Employi…
Quantum chicken-egg dilemmas: Delayed-choice causal order and the reality of causal non-separability
Simon Milz, Dominic Jurkschat, Felix A. Pollock +1
Recent frameworks describing quantum mechanics in the absence of a global causal order admit the existence of causally indefinite processes, where it is impossible to ascribe causa…
The dark side of energy transport along excitonic wires: On-site energy barriers facilitate efficient, vibrationally-mediated transport through optically dark subspaces
Scott Davidson, Amir Fruchtman, Felix Pollock +1
We present a novel, counter-intuitive method, based on dark state protection, for significantly improving exciton transport efficiency through `wires' comprising a chain of molecul…
A discrete memory-kernel for multi-time correlations in non-Markovian quantum processes
Mathias R. Jørgensen, Felix A. Pollock
Efficient simulations of the dynamics of open systems is of wide importance for quantum science and tech-nology. Here, we introduce a generalization of the transfer-tensor, or disc…
Resource speed limits: Maximal rate of resource variation
Francesco Campaioli, Chang-shui Yu, Felix A. Pollock +1
Recent advances in quantum resource theories have been driven by the fact that many quantum information protocols make use of different facets of the same physical features, e.g. e…
Principles underlying efficient exciton transport unveiled by information-geometric analysis
Scott Davidson, Felix A. Pollock, Erik M. Gauger
Adapting techniques from the field of information geometry, we show that open quantum system models of Frenkel exciton transport, a prevalent process in photosynthetic networks, be…
Demonstration of non-Markovian process characterisation and control on a quantum processor
Gregory A. L. White, Charles D. Hill, Felix A. Pollock +2
In the scale-up of quantum computers, the framework underpinning fault-tolerance generally relies on the strong assumption that environmental noise affecting qubit logic is uncorre…
Markovianization with approximate unitary designs
Pedro Figueroa-Romero, Felix A. Pollock, Kavan Modi
Memoryless processes are ubiquitous in nature, in contrast with the mathematics of open systems theory, which states that non-Markovian processes should be the norm. This discrepan…
A Technical Critique of Some Parts of the Free Energy Principle
Martin Biehl, Felix A. Pollock, Ryota Kanai
We summarize the original formulation of the free energy principle, and highlight some technical issues. We discuss how these issues affect related results involving generalised co…