Systematic many-fermion Hamiltonian input scheme and spectral calculations on quantum computers

Fuente: arXiv
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Autori principali: Du, Weijie, Vary, James P.
Natura: Preprint
Pubblicazione: 2024
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author Du, Weijie
Vary, James P.
author_facet Du, Weijie
Vary, James P.
contents We present a novel input scheme for general second-quantized Hamiltonians of relativistic or non-relativistic many-fermion systems. This input scheme incorporates the fermionic anticommutation relations, particle number variations, and respects the symmetries of the Hamiltonian. Based on our input scheme, we propose a hybrid quantum-classical framework for spectral calculations on future quantum hardwares. We provide explicit circuit designs and the associated gate cost. We demonstrate our hybrid framework by solving the low-lying spectra of ${^{42}}$Ca and ${^{46}}$Ca. Our input scheme provides new pathways to solving the spectra and dynamics of the relativistic and nonrelativistic many-fermion systems via first-principles approaches.
format Preprint
id arxiv_https___arxiv_org_abs_2402_08969
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Systematic many-fermion Hamiltonian input scheme and spectral calculations on quantum computers
Du, Weijie
Vary, James P.
Quantum Physics
Nuclear Theory
We present a novel input scheme for general second-quantized Hamiltonians of relativistic or non-relativistic many-fermion systems. This input scheme incorporates the fermionic anticommutation relations, particle number variations, and respects the symmetries of the Hamiltonian. Based on our input scheme, we propose a hybrid quantum-classical framework for spectral calculations on future quantum hardwares. We provide explicit circuit designs and the associated gate cost. We demonstrate our hybrid framework by solving the low-lying spectra of ${^{42}}$Ca and ${^{46}}$Ca. Our input scheme provides new pathways to solving the spectra and dynamics of the relativistic and nonrelativistic many-fermion systems via first-principles approaches.
title Systematic many-fermion Hamiltonian input scheme and spectral calculations on quantum computers
topic Quantum Physics
Nuclear Theory
url https://arxiv.org/abs/2402.08969