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4 papers · 2 filters
Cavity approach to variational quantum mechanics
A. Ramezanpour
A local and distributive algorithm is proposed to find an optimal trial wave-function minimizing the Hamiltonian expectation in a quantum system. To this end, the quantum state of…
Microscopic theory of energy dissipation and decoherence in solid-state systems: A reformulation of the conventional Markov limit
Michele Pepe, David Taj, Rita Claudia Iotti +1
We present and discuss a general density-matrix description of energy-dissipation and decoherence phenomena in open quantum systems, able to overcome the intrinsic limitations of t…
Quantum discord and classical correlations in the bond-charge Hubbard model: quantum phase transitions, ODLRO and violation of the monogamy property for discord
Michele Allegra, Paolo Giorda, Arianna Montorsi
We study the quantum discord (QD) and the classical correlations (CC) in a reference model for strongly correlated electrons, the one-dimensional bond-charge extended Hubbard model…
Systematic analysis of SNR in bipartite Ghost Imaging with classical and quantum light
G. Brida, M. V. Chekhova, G. A. Fornaro +3
We present a complete and exhaustive theory of signal-to-noise-ratio in bipartite ghost imaging with classical (thermal) and quantum (twin beams) light. The theory is compared with…