1–4 Nov 2022
CERN
Europe/Zurich timezone
There is a live webcast for this event.

Solving Hadron structures using the basis light-front quantization approach on quantum computers

Not scheduled
5m
Pas Perdus and Mezzanine (CERN)

Pas Perdus and Mezzanine

CERN

Speaker

Wenyang Qian (University of Santiago de Compostela)

Description

Quantum computing has demonstrated the potential to revolutionize our understanding of nuclear, atomic, and molecular structure by obtaining forefront solutions in non-relativistic quantum many-body theory. In this work, we show that quantum computing can be used to solve for the structure of hadrons, governed by strongly-interacting relativistic quantum field theory. Following our previous work on light unflavored mesons as a relativistic bound-state problem within the nonperturbative Hamiltonian formalism, we present the numerical calculations on simulated quantum devices using the basis light-front quantization (BLFQ) approach. We implement and compare the variational quantum eigensolver (VQE) and the subspace-search variational quantum eigensolver (SSVQE) to find the low-lying mass spectrum of the light meson system and its corresponding light-front wave functions as quantum states from ideal simulators, noisy simulators, and IBM quantum computers. Based on obtained quantum states, we evaluate the meson decay constants and parton distribution functions directly on the quantum circuits. Our calculations on the quantum computers and simulators are in reasonable agreement with accurate numerical solutions solved on classical computers when noises are moderately small, and our overall results are comparable with the available experimental data.

Short summary of your poster content

We use variational quantum eigensolvers to solve hadron structures with light-front Hamiltonian formalism on quantum computers.

Email Address of submitter

qian.wenyang@usc.es

Poster printing Yes

Author

Wenyang Qian (University of Santiago de Compostela)

Co-authors

Prof. Glenn Luecke (Iowa State University) Prof. James Vary (Iowa State University) Dr Robert Basili (Iowa State University) Dr Soham Pal (Iowa State University)

Presentation materials

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