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quant-ph2022★ 6 cited
Quantum tomography using state-preparation unitaries
Joran van Apeldoorn, Arjan Cornelissen, András Gilyén +1
We describe algorithms to obtain an approximate classical description of a -dimensional quantum state when given access to a unitary (and its inverse) that prepares it. For pure…
quant-ph2021★ 2 cited
Exact quantum query complexity of computing Hamming weight modulo powers of two and three
Arjan Cornelissen, Nikhil S. Mande, Maris Ozols +1
We study the problem of computing the Hamming weight of an -bit string modulo , for any positive integer whose only prime factors are 2 and 3. We show that the exa…