Efficacious Qubit Mappings for Quantum Simulations of the 12C Rotational Band

Solving atomic nuclei from first principles places enormous demands on computational resources, which grow exponentially with increasing number of particles and the size of the space they occupy. We present first quantum simulations based on the variational quantum eigensolver for the low-lying stru...

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Bibliographic Details
Published in2024 IEEE Computer Society Annual Symposium on VLSI (ISVLSI) pp. 627 - 631
Main Authors Mumma, Darin C., Sun, Zhonghao, Mercenne, Alexis, Launey, Kristina D., Rethinasamy, Soorya, Sauls, James A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2024
Subjects
Encoding
Gray encoding
Noise
nuclear structure
Performance evaluation
Quantum computing
Qubit
Reliability
Stability analysis
symmetry -adapted basis
Very large scale integration
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Summary:Solving atomic nuclei from first principles places enormous demands on computational resources, which grow exponentially with increasing number of particles and the size of the space they occupy. We present first quantum simulations based on the variational quantum eigensolver for the low-lying structure of the 12 C nucleus that provide acceptable bound-state energies even in the presence of noise. We achieve this by taking advantage of two critical developments. First, we utilize an almost perfect symmetry of atomic nuclei that, in a complete symmetry-adapted basis, drastically reduces the size of the model space. Second, we use the efficacious Gray encoding, for which it has been recently shown that it is resource efficient, especially when coupled with a near band -diagonal structure of the nuclear Hamiltonian.
ISSN:2159-3477
DOI:10.1109/ISVLSI61997.2024.00119