Reducing Circuit Depth in Adaptive Variational Quantum Algorithms via Effective Hamiltonian Theories.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of chemical theory and computation"
DOI: 10.1021/acs.jctc.2c00341
Abstract: The electronic structure is an anticipated application for quantum computers. However, quantum circuits required to represent the highly entangled electronic wave functions within the variational quantum eigensolver (VQE) framework are far beyond the capacity of… read more here.
Keywords: algorithms; circuit depth; quantum; variational quantum ... See more keywords
Electronic and transport properties of TMDC planar superlattices: effective Hamiltonian approach
Sign Up to like & getrecommendations! Published in 2021 at "Physica Scripta"
DOI: 10.1088/1402-4896/ac2104
Abstract: We model and study the electronic and transport properties of a planar 2D superlattice (PSL) structure containing laterally arranged alternating ribbons of Transition Metal DiChalogenides (TMDC). Within governed effective Hamiltonian we derived adopted transfer matrix… read more here.
Keywords: transport properties; transport; properties tmdc; effective hamiltonian ... See more keywords
Effective Hamiltonian models of the cross-resonance gate
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.101.052308
Abstract: Effective Hamiltonian methods are utilized to model the two-qubit cross-resonance gate for both the ideal two-qubit case and when higher levels are included. Analytic expressions are obtained in the qubit case and the higher-level model… read more here.
Keywords: models cross; resonance gate; effective hamiltonian; hamiltonian models ... See more keywords
Ab initio derivation of an effective Hamiltonian for the La2CuO4/La1.55Sr0.45CuO4 heterostructure
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.155148
Abstract: We formulate a method of deriving effective low-energy Hamiltonian for nonperiodic systems such as interfaces for strongly correlated electron systems by extending conventional multi-scale $\textit{ab initio}$ scheme for correlated electrons (MACE). We apply the formalism… read more here.
Keywords: relaxation; hamiltonian la2cuo4; derivation effective; effective hamiltonian ... See more keywords
Effective Hamiltonian for cuprate superconductors derived from multiscale ab initio scheme with level renormalization
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.245155
Abstract: Three types (three-band, two-band, and one-band) of effective Hamiltonians for ${\mathrm{HgBa}}_{2}{\mathrm{CuO}}_{4}$ and three-band effective Hamiltonian for ${\mathrm{La}}_{2}{\mathrm{CuO}}_{4}$ are derived by improving the constrained-$GW$ approximation combined with the self-interaction correction ($\mathrm{c}GW\ensuremath{-}\text{SIC}$) formulated by Hirayama et al.… read more here.
Keywords: mathrm; mathrm cuo; effective hamiltonian; ensuremath ... See more keywords
Effective Hamiltonian for QCD on the Light Front
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Particles and Nuclei Letters"
DOI: 10.1134/s1547477119050200
Abstract: A semiphenomenological model of the effective Hamiltonian of quantum chromodynamics on the light front in a (3+1)-dimensional space-time is proposed, and the spectral equation for the mass squared of quarkÄantiquark states is considered. Proposed Hamiltonian… read more here.
Keywords: light front; qcd light; hamiltonian qcd; effective hamiltonian ... See more keywords
Coarse-Grained Effective Hamiltonian via the Magnus Expansion for a Three-Level System
Sign Up to like & getrecommendations! Published in 2022 at "Entropy"
DOI: 10.3390/e25020234
Abstract: Quantum state processing is one of the main tools of quantum technologies. While real systems are complicated and/or may be driven by non-ideal control, they may nevertheless exhibit simple dynamics approximately confined to a low-energy… read more here.
Keywords: magnus expansion; grained effective; coarse grained; effective hamiltonian ... See more keywords