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5 papers · 2 filters
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.…
Is the matrix completion of reduced density matrices unique?
Gustavo E. Massaccesi, Ofelia B. Oña, Luis Lain +4
Reduced density matrices are central to describing observables in many-body quantum systems. In electronic structure theory, the two-particle reduced density matrix (2-RDM) suffice…
A First-Principles Thermodynamic Uncertainty Relation for Shortcuts to Adiabaticity
Guillermo Perna, Federico Centrone, Esteban Calzetta
We study the fundamental limitations of implementing time-dependent Hamiltonian protocols when ''time'' is provided by a quantum clock rather than an external classical parameter.…
Determining the ensemble N-representability of Reduced Density Matrices
Ofelia B. Oña, Gustavo E. Massaccesi, Pablo Capuzzi +5
The N-representability problem for reduced density matrices remains a fundamental challenge in electronic structure theory. Following our previous work that employs a unitary-evolu…
Shortcuts to adiabaticity, unexciting backgrounds, and reflectionless potentials
Fernando C. Lombardo, Francisco D. Mazzitelli
We analyze shortcuts to adiabaticity (STA) and their completions for the quantum harmonic oscillator (QHO) with time-dependent frequency, as well as for quantum field theory (QFT)…