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 quantum-journal.org

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A chart of hourly posts over the last week (for big screens). A chart of hourly posts over the last week (for small screens).
English(2)
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From quantum-journal.org

Gradients and frequency profiles of quantum re-uploading models

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Alice Barthe and Adrián Pérez-Salinas, Quantum 8, 1523 (2024). Quantum re-uploading models have been extensively investigated as a form of machine learning within the context of variational quantum algorithms. Their trainability and expressivity are not…

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15h ago

From quantum-journal.org

Ground and Excited States from Ensemble Variational Principles

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Lexin Ding, Cheng-Lin Hong, and Christian Schilling, Quantum 8, 1525 (2024). The extension of the Rayleigh-Ritz variational principle to ensemble states $\rho_{\mathbf{w}}\equiv\sum_k w_k |\Psi_k\rangle \langle\Psi_k|$ with fixed weights $w_k$ lies ultimately at the hear…

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12h ago

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