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Hybrid Quantum-Classical Algorithm for Hydrodynamics

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arxiv 2202.00918 v1 pith:HMZD6IYW submitted 2022-02-02 quant-ph physics.flu-dynphysics.plasm-ph

classification quant-phphysics.flu-dynphysics.plasm-ph
keywords quantumalgorithmhybridwalksfluidsmodelnisqsnonlinear
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abstract

A new model of nonlinear charged quantum relativistic fluids is presented. This model can be discretized into Discrete Time Quantum Walks (DTQWs), and a new hybrid (quantum-classical) algorithm for implementing these walks on NISQ devices is proposed. High resolution (up to $N=2^{17}$ grid points) hybrid numerical simulations of relativistic and non-relativistic hydrodynamical shocks on current IBM NISQs are performed with this algorithm and shown to reproduce equivalent simulations on classical computers. This work demonstrates that nonlinear fluid dynamics can be simulated on NISQs, and opens the door to simulating other, quantum and non-quantum fluids, including plasmas, with more general quantum walks and quantum automata.

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  1. Solving the Nonlinear Vlasov Equation on a Quantum Computer

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    For a 1+1 dimensional Vlasov model with Krook collisions, a Carleman linearization quantum algorithm has polynomially worse complexity than classical finite difference methods and requires unphysically large collision...

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