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Multiverse Computing has leveraged NVIDIA H200 GPUs to achieve bond dimensions of ~62,000, enabling classical TDVP simulations that surpass the validation limits of recent 120-qubit quantum experiments. This advance demonstrates how algorithmic improvements in tensor networks and GPU acceleration are rapidly expanding the frontier of classical simulation capabilities. Consequently, these results necessitate a rigorous re-evaluation of quantum advantage claims in the specific domain of real-time dynamics for the Fermi–Hubbard model.

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NVIDIA H200 GPUs Enable Largest TDVP Simulations of Real-Time Dynamics

Quantum ZeitgeistJune 9, 20262 min read

Researchers utilized NVIDIA H200 GPUs and an optimized simulation framework to achieve bond dimensions of approximately 62,000 in Time-Dependent Variational Principle (TDVP) simulations, enabling fully converged results for the one-dimensional Fermi–Hubbard model. This work provides classical verification of a recent quantum hardware experiment and extends simulations beyond the capabilities of the quantum processor.

Reaching bond dimensions of approximately 62,000, researchers at Multiverse Computing have achieved some of the largest reported TDVP simulations of real-time quantum dynamics, utilizing up to four NVIDIA H200 GPUs. This advance enabled fully converged simulations of…

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