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Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures
New Journal of Physics, 2017 The constraints arising for a general set of causal relations, both classically and quantumly, are still poorly understood. As a step in exploring this question, we consider a coherently controlled superposition of ‘direct-cause’ and ‘common-cause ...
Adrien Feix, Časlav Brukner
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Experimental Predictions for Norm-Conserving Spontaneous Collapse
Entropy, 2023 Previous work has shown that nonlocal collapse in quantum mechanics can be described by a deterministic, non-unitary operator added to the standard Schrödinger equation.
D. W. Snoke, D. N. Maienshein
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Foundations of Quantum Approaches to Consciousness [PDF]
Journal of Philosophical Investigations, 2021 As generally accepted, consciousness or mind and material brain are closely related to each other; but how? Quantum mechanics is a new pathway to understand the hard problem of consciousness and its relation to the brain.
Hamid Faghanpour Azizi +2 more
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QUANTUM THEOLOGY BEYOND COPENHAGEN: TAKING FUNDAMENTALISM LITERALLY
Zygon, 2023 Theological engagement with quantum physics has, to this day, been dominated by the Copenhagen interpretation. However, philosophers and physicists working in the “quantum foundations” field have largely abandoned the Copenhagen view on account of what ...
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Entropy, 2020 A novel uncertainty relation for errors of general quantum measurement is presented. The new relation, which is presented in geometric terms for maps representing measurement, is completely operational and can be related directly to tangible measurement ...
Jaeha Lee, Izumi Tsutsui
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Contextuality under weak assumptions
New Journal of Physics, 2017 The presence of contextuality in quantum theory was first highlighted by Bell, Kochen and Specker, who discovered that for quantum systems of three or more dimensions, measurements could not be viewed as deterministically revealing pre-existing ...
Andrew W Simmons +4 more
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Summoning, No-Signalling and Relativistic Bit Commitments
Entropy, 2019 Summoning is a task between two parties, Alice and Bob, with distributed networks of agents in space-time. Bob gives Alice a random quantum state, known to him but not her, at some point. She is required to return the state at some later point, belonging
Adrian Kent
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Observer-dependent locality of quantum events
New Journal of Physics, 2018 In general relativity, the causal structure between events is dynamical, but it is definite and observer-independent; events are point-like and the membership of an event A in the future or past light-cone of an event B is an observer-independent ...
Philippe Allard Guérin, Časlav Brukner
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Quantum annealing – foundations and frontiers [PDF]
The European Physical Journal Special Topics, 2015 We briefly review various computational methods for the solution of optimization problems. First, several classical methods such as Metropolis algorithm and simulated annealing are discussed. We continue with a description of quantum methods, namely adiabatic quantum computation and quantum annealing.
Cohen, Eliahu, Tamir, Boaz
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Planck-Scale Soccer-Ball Problem: A Case of Mistaken Identity
Entropy, 2017 Over the last decade, it has been found that nonlinear laws of composition of momenta are predicted by some alternative approaches to “real” 4D quantum gravity, and by all formulations of dimensionally-reduced (3D) quantum gravity coupled to matter.
Giovanni Amelino-Camelia
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