D
David Jennings
Researcher at Imperial College London
Publications - 84
Citations - 3892
David Jennings is an academic researcher from Imperial College London. The author has contributed to research in topics: Quantum & Quantum state. The author has an hindex of 26, co-authored 78 publications receiving 3352 citations. Previous affiliations of David Jennings include University of Sydney & University of Oxford.
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The geometry of passivity for quantum systems and a novel elementary derivation of the Gibbs state
Nikolaos Koukoulekidis,Rhea Alexander,Thomas Hebdige,Thomas Hebdige,David Jennings,David Jennings,David Jennings +6 more
TL;DR: This work re-formulates passivity for quantum systems in purely geometric terms, and shows that, to every passive state, one can associate a simple convex shape in a 2-dimensional plane, and that the area of this shape measures the degree to which the system deviates from the manifold of equilibrium states.
Journal ArticleDOI
Bulk black holes radiating in non-Z_2 brane-world spacetimes
TL;DR: In this article, a general asymmetric brane model involving arbitrary energy transport to and from an embedded 4-D FRW universe is presented, and a locally defined mass function for the 5D spacetime and its time evolution on the brane is described.
Posted Content
Global and local gauge symmetries beyond Lagrangian formulations
Cristina Cirstoiu,David Jennings +1 more
TL;DR: An information-theoretic framework is employed to address the structure of general quantum processes on composite systems and shows that every symmetric quantum process on a system has a highly rigid decomposition in terms of the flow of symmetry-breaking degrees of freedom between each subsystem and its environment.
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Pure Qubit Work Extraction Revisited
TL;DR: In this paper, a spin-1/2 particle coupled to a finite-sized directional quantum reference frame is considered, and the authors analyse the back-action of a quantum-mechanical work extraction process, and highlight a range of assumptions commonly made when considering such processes.
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Infinitesimal reference frames suffice to determine the asymmetry properties of a quantum system
TL;DR: In this article, it was shown that the complete set of entropic conditions has extensive redundancy, and one can restrict to reference frames forming any closed surface in the state space that has the maximally mixed state in its interior.