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Quantum Simulation

Experimental Observation of Curved Light-Cones in a Quantum Field Simulator

arXiv

Authors: Mohammadamin Tajik, Marek Gluza, Nicolas Sebe, Philipp Schüttelkopf, Federica Cataldini, João Sabino, Frederik Møller, Si-Cong Ji, Sebastian Erne, Giacomo Guarnieri, Spyros Sotiriadis, Jens Eisert, Jörg Schmiedmayer

Year

2022

Paper ID

59188

Status

Preprint

Abstract Read

~2 min

Abstract Words

105

Citations

N/A

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 non-equilibrium field dynamics in general spacetime metrics.

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We investigate signal propagation in a quantum field simulator of the Klein-Gordon model realized by two strongly coupled parallel one-dimensional quasi-condensates.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2209.09132 [2] arXiv https://arxiv.org/abs/2209.09132 [3] Publisher https://arxiv.org/abs/2209.09132

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