Mainz 2026 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 35: Quantum Computing and Simulation IV
Q 35.7: Talk
Wednesday, March 4, 2026, 16:15–16:30, P 10
Photonic simulation of quantum field dynamics — •Mauro D'Achille1, Martin Gärttner1, and Tobias Haas2 — 1FSU Jena — 2Universität Ulm
Photonic multimode systems are an emerging quantum simulation platform ideally suited for emulating non-equilibrium problems in quantum field theory. I will present a new algorithm to decompose the time evolution operator generated by a large class of field-theoretic quadratic Hamiltonians in terms of optical elements. The peculiarity of this decomposition consists of the way in which the time parameter is taken into account. Indeed, for such a class, it is always possible to decouple the time evolution in time-dependent phase shifters by means of a proper time-independent symplectic transformation, composed by squeezers and beam splitters. I will conclude by presenting physically relevant examples and applications aimed to analyze and simulate how the information measures associated to local and non-local theories spread over time.
Keywords: quantum information; quantum simulation; quantum field theory; quantum optics