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quant-ph2026
Complexity of detecting large coefficients in the Pauli basis
Santiago Cifuentes
We study the problem of deciding, given a mechanism to prepare a quantum state and a value , whether there is some non-identity Pauli matrix such that $|Tr…
quant-ph2026
Variational Quantum Models for Knowledge Graph Embeddings on NISQ Devices
Guido Bellomo, Martín Santesteban, Patricio Bruno +2
Variational Quantum Algorithms (VQAs) combine quantum circuits with classical optimization to tackle problems that may benefit from the capabilities of near-term quantum hardware.…
quant-ph2026
Measuring the largest coefficients of a quantum state
Nicolás Ciancaglini, Santiago Cifuentes, Guido Bellomo +2
We introduce a hierarchical algorithm for identifying the indices of the largest Pauli coefficients of an unknown -qubit quantum state, either those exceeding a threshold or the…