1.2k citations · 13.8k across the 143 of their papers we have counts for
145 papers
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…
An Operational Resolution of the Third-Particle Paradox
Časlav Brukner, Esteban Castro-Ruiz, Marius Krumm
We give an operational resolution of the third-particle paradox, relevant in the theory of quantum reference frames. The apparent paradox is that a system which is irrelevant in on…
Schroedinger's Equation at 100: The Wave Picture That Helped and Possibly Hurt
Caslav Brukner
Schroedinger's equation gave early quantum theory a visual language that looked like physics again: a wave evolving by a linear differential equation. This essay argues that the sa…
A Quantum Superposition of Black Hole Evaporation Histories: Recovering Unitarity
Ali Akil, Lorenzo Giannelli, Leonardo Modesto +3
Black hole evaporation is one of the most striking phenomena at the interface between gravity and quantum physics. In Hawking's semi-classical treatment, where matter is quantum me…
Evidencing Quantum Gravity with Thermodynamical Observables
Thomas Strasser, Marios Christodoulou, Richard Howl +1
Proposed experiments for obtaining empirical evidence for a quantum description of gravity in a table-top setting focus on detecting quantum information signatures, such as entangl…
Knot invariants and indefinite causal order
Samuel Fedida, Anne-Catherine de la Hamette, Viktoria Kabel +1
We explore indefinite causal order between events in the context of quasiclassical spacetimes in superposition. We introduce several new quantifiers to measure the degree of indefi…