A unitary decomposition using SWAP and center-switch gates reduces the number of terms needed to encode tridiagonal linear systems in the variational quantum linear solver, with first simulator and hardware demonstrations at 2x2 and 4x4 sizes.
Variational quantum algorithms for discovering hamiltonian spectra,
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Solving 1D Poisson problem with a Variational Quantum Linear Solver
A unitary decomposition using SWAP and center-switch gates reduces the number of terms needed to encode tridiagonal linear systems in the variational quantum linear solver, with first simulator and hardware demonstrations at 2x2 and 4x4 sizes.