QuCoLiMa Talk – Simulating quantum many-body dynamics in systems with collective couplings and dissipation (Johannes Schachenmayer)

30. Januar 2024 @ 12:00
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The lecture „Simulating quantum many-body dynamics in systems with collective couplings and dissipation“ will be given by Johannes Schachenmayer.

Simulating the non-equilibrium dynamics of many interacting quantum particles on a classical computer is a challenging task due to the build-up of strong (quantum) correlations. The problem seems to become even more difficult in the presence of long-range couplings, and in cases where one wants to include couplings to an environment. In this talk I will discuss that the situation is in fact much more subtle. I will introduce numerical matrix product state methods for the simulation of such models, and show how the numerical complexity of simulations is directly connected to the entanglement build-up in the dynamics. Remarkably, entanglement build-up can be less important when introducing long-range interactions. Furthermore, dissipation leads to decoherence and our method can exploit this to make simulations more efficient. I will demonstrate the usefulness of our numerical approaches with recent research results for the dynamics of cavity-coupled quantum emitters.


when: january, 30th, 12:00pm -1:00pm

where: Zoom

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QuCoLiMa Talks are regular seminars of the collaborative research center TRR 306 QuCoLiMa (Quantum Cooperativity of Light and Matter), where (external) experts are invited to present their work.