ArticleNature communications2018
Resolution of superluminal signalling in non-perturbative cavity quantum electrodynamics.
Article in Nature communications, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Probing the symmetry breaking of a light-matter system by an ancillary qubit.Nature communications · 2023Article
- Atoms in separated resonators can jointly absorb a single photon.Scientific reports · 2020Article
- Relevance of the Quadratic Diamagnetic and Self-Polarization Terms in Cavity Quantum Electrodynamics.ACS photonics · 2020Article
- Reduced Density-Matrix Approach to Strong Matter-Photon Interaction.ACS photonics · 2019Article
- Modelling the ultra-strongly coupled spin-boson model with unphysical modes.Nature communications · 2019Article
- Gauge ambiguities imply Jaynes-Cummings physics remains valid in ultrastrong coupling QED.Nature communications · 2019Article
- Photodetection probability in quantum systems with arbitrarily strong light-matter interaction.Scientific reports · 2018Article
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Authors and funding
3 authors.
Funding
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Abstract
Recent technological developments have made it increasingly easy to access the non-perturbative regimes of cavity quantum electrodynamics known as ultrastrong or deep strong coupling, where the light-matter coupling becomes comparable to the bare modal frequencies. In this work, we address the adequacy of the broadly used single-mode cavity approximation to describe such regimes. We demonstrate that, in the non-perturbative light-matter coupling regimes, the single-mode models become unphysical, allowing for superluminal signalling. Moreover, considering the specific example of the quantum Rabi model, we show that the multi-mode description of the electromagnetic field, necessary to account for light propagation at finite speed, yields physical observables that differ radically from their single-mode counterparts already for moderate values of the coupling. Our multi-mode analysis also reveals phenomena of fundamental interest on the dynamics of the intracavity electric field, where a free photonic wavefront and a bound state of virtual photons are shown to coexist.
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Registered trials
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