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Rigetti Simulates Plasma Wave Dispersion on Superconducting Ankaa-3 Processor Using Specialized Error Mitigation
An electromagnetic wave packet propagating (a) in free space, (b) from free space to a sharp jump in plasma density (which mimics the edge of a confined overdense plasma), and (c) through an inhomogeneous plasma with a spatially varying density profile.
Rigetti Computing, in collaboration with Lawrence Livermore National Laboratory and the University of Colorado, Boulder, has executed a noiseless surrogate “spin” model simulation tracking linear plasma wave propagation and scattering profiles. Published in Physical Review Applied, the research was conducted using a nine-qubit cluster on Rigetti’s 84-qubit Ankaa-3 superconducting quantum computer. By employing dual error mitigation routines to suppress phase and gate noise, the experiment successfully mapped electromagnetic wave dispersion and reflection signatures across spatially varying plasma densities, establishing a framework to explore non-equilibrium, non-linear quantum plasma dynamics.
