ArticleProceedings of the National Academy of Sciences of the United States of America2023
Experimental observation of curved light-cones in a quantum field simulator.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 35 citations in OpenAlex.
- Probing entanglement scaling across a quantum phase transition on a quantum computer.Nature communications · 2026Article
- Measurement of analogue Hawking radiation stimulated by a single photon.Nature communications · 2026Article
- Article
- Experimental observation of curved light-cones in a quantum field simulator.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
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Authors and funding
13 authors at 7 institutions in 6 countries.
Funding
Abstract
We investigate signal propagation in a quantum field simulator of the Klein-Gordon model realized by two strongly coupled parallel one-dimensional quasi-condensates. By measuring local phononic fields after a quench, we observe the propagation of correlations along sharp light-cone fronts. If the local atomic density is inhomogeneous, these propagation fronts are curved. For sharp edges, the propagation fronts are reflected at the system's boundaries. By extracting the space-dependent variation of the front velocity from the data, we find agreement with theoretical predictions based on curved geodesics of an inhomogeneous metric. This work extends the range of quantum simulations of nonequilibrium field dynamics in general space-time metrics.
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