Zobrazeno 1 - 10
of 498
pro vyhledávání: '"Riveros, Carlos"'
Publikováno v:
Phys. Rev. Lett. 133, 080202 (2024)
We present an exact ansatz for the eigenstate problem of mixed fermion-boson systems that can be implemented on quantum devices. Based on a generalization of the electronic contracted Schr\"odinger equation (CSE), our approach guides a trial wave fun
Externí odkaz:
http://arxiv.org/abs/2402.12273
Publikováno v:
J. Phys. Chem. Lett. 2024, 15, 3603-3610
The accurate (or even approximate) solution of the equations that govern the dynamics of dissipative quantum systems remains a challenging task for quantum science. While several algorithms have been designed to solve those equations with different d
Externí odkaz:
http://arxiv.org/abs/2402.02788
Publikováno v:
Phys. Rev. Research 6, L012052 (2024)
Quantum Fisher information (QFI) is a central concept in quantum sciences used to quantify the ultimate precision limit of parameter estimation, detect quantum phase transitions, witness genuine multipartite entanglement, or probe nonlocality. Despit
Externí odkaz:
http://arxiv.org/abs/2311.12596
Publikováno v:
New J. Phys. 26 033020 (2024)
Computing excited-state properties of molecules and solids is considered one of the most important near-term applications of quantum computers. While many of the current excited-state quantum algorithms differ in circuit architecture, specific exploi
Externí odkaz:
http://arxiv.org/abs/2311.05058
Autor:
Hong, Cheng-Lin, Colmenarez, Luis, Ding, Lexin, Benavides-Riveros, Carlos L., Schilling, Christian
The weighted subspace-search variational quantum eigensolver (SSVQE) is a prominent algorithm for calculating excited-state properties of molecular quantum systems. In this work, we elaborate on some of its fundamental features with the aim of improv
Externí odkaz:
http://arxiv.org/abs/2306.11844
Autor:
Benavides-Riveros, Carlos L.
Publikováno v:
Phys. Rev. Research 6, 013060 (2024)
Wigner functions are broadly used to probe non-classical effects in the macroscopic world. Here we develop an orbital-free functional framework to compute the 1-body Wigner quasi-probability for both fermionic and bosonic systems. Since the key varia
Externí odkaz:
http://arxiv.org/abs/2304.09056
Publikováno v:
New J. Phys. 25, 083040 (2023)
The ground states of the homogeneous electron gas and the homogeneous electron liquid are cornerstones in quantum physics and chemistry. They are archetypal systems in the regime of slowly varying densities in which the exchange-correlation energy ca
Externí odkaz:
http://arxiv.org/abs/2210.03024
Autor:
Benavides-Riveros, Carlos L., Chen, Lipeng, Schilling, Christian, Mantilla, Sebastián, Pittalis, Stefano
Publikováno v:
Phys. Rev. Lett. 129, 066401 (2022)
State-average calculations based on mixture of states are increasingly being exploited across chemistry and physics as versatile procedures for addressing excitations of quantum many-body systems. If not too many states should need to be addressed, c
Externí odkaz:
http://arxiv.org/abs/2201.10974
Autor:
Gedeon, Johannes, Schmidt, Jonathan, Hodgson, Matthew J. P., Wetherell, Jack, Benavides-Riveros, Carlos L., Marques, Miguel A. L.
Publikováno v:
Mach. Learn.: Sci. Technol. 3 015011 (2022)
Machine learning is a powerful tool to design accurate, highly non-local, exchange-correlation functionals for density functional theory. So far, most of those machine learned functionals are trained for systems with an integer number of particles. A
Externí odkaz:
http://arxiv.org/abs/2106.16075
Publikováno v:
Phys. Rev. Research 3, L032063 (2021)
The one-body reduced density matrix $\gamma$ plays a fundamental role in describing and predicting quantum features of bosonic systems, such as Bose-Einstein condensation. The recently proposed reduced density matrix functional theory for bosonic gro
Externí odkaz:
http://arxiv.org/abs/2104.03208