189 citations · 1k across the 29 of their papers we have counts for
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Quantum Permutations and Beyond Quantum Controlled Reference Frames
Ofek Bengyat, Časlav Brukner, Marios Christodoulou
Quantum permutations, or magic unitaries, have in recent years been explored in the context of identifying `genuinely quantum' isometries of graphs. Here, we import this tool in ph…
Complete Relational Description of Spin in a Quantum Background
Hannah Troger, Ofek Bengyat, Thomas D. Galley +1
The standard description of the state of a spin in quantum mechanics presupposes externally fixed directions -- a classical background. Can a spin be fully described instead in rel…
A truly relativistic gravity mediated entanglement protocol using superpositions of rotational energies
Gerard Higgins, Andrea Di Biagio, Marios Christodoulou
Experimental proposals for testing quantum gravity-induced entanglement of masses (QGEM) typically involve two interacting masses which are each in a spatial superposition state. H…
Gravity Mediated Entanglement between Oscillators as Quantum Superposition of Geometries
Ofek Bengyat, Andrea Di Biagio, Markus Aspelmeyer +1
Protocols for observing gravity induced entanglement typically comprise the interaction of two particles prepared either in a superposition of two discrete paths, or in a continuou…
Circuit locality from relativistic locality in scalar field mediated entanglement
Andrea Di Biagio, Richard Howl, Časlav Brukner +2
Locality is a central notion in modern physics, but different disciplines understand it in different ways. Quantum field theory focuses on relativistic locality, based on spacetime…
Indefinite causal order and quantum coordinates
Anne-Catherine de la Hamette, Viktoria Kabel, Marios Christodoulou +1
Classically the causal order of two timelike separated events A and B is fixed -- either A before B or B before A. This is no longer true in quantum theory, where it is possible to…