Add SparseMatrixHermitian block-encoding
#1479
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@tanujkhattar @fdmalone ptal! |
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mpharrigan
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Nov 4, 2024
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Thanks! @tanujkhattar may have some comments later, which I endeavor you to address if and when they occur; but to keep things moving, I'm going to LGTM and merge this
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Implements a Hermitian block-encoding$U$ of a sparse matrix $A$ . i.e. the unitary $U$ is Hermitian, or equivalently, a reflection. This is useful to directly build an efficient walk operator, for example in #1348
Ref: https://arxiv.org/abs/2201.08309, Ch. 6.5. Proposition 6.8, Fig 6.7.