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arxiv: 1806.06649 · v3 · pith:MVLMAKHMnew · submitted 2018-06-18 · 🪐 quant-ph · cond-mat.str-el· hep-lat

Simulation of Nonequilibrium Dynamics on a Quantum Computer

classification 🪐 quant-ph cond-mat.str-elhep-lat
keywords quantumcomputermatrixrigettialgorithmapproximationclassicallycomputing
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We present a hybrid quantum-classical algorithm for the time evolution of out-of-equilibrium thermal states. The method depends upon classically computing a sparse approximation to the density matrix, and then time-evolving each matrix element via the quantum computer. For this exploratory study, we investigate the time-dependent Heisenberg model with five spins on the Rigetti Forest quantum virtual machine and a one spin system on the Rigetti 8Q-Agave quantum processor.

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