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Trapped Ion Quantum Computing Quantum Simulation Quantum Chemistry

Quantum simulations employing connected moments expansions

arXiv
Authors: Karol Kowalski, Bo Peng

Year

2020

Paper ID

20755

Status

Preprint

Abstract Read

~2 min

Abstract Words

104

Citations

N/A

Abstract

Further advancement of quantum computing (QC) is contingent on enabling many-body models that avoid deep circuits and excessive use of CNOT gates. To this end, we develop a QC approach employing finite-order connected moment expansions (CMX) and affordable procedures for initial state preparation. We demonstrate the performance of our approach employing several quantum variants of CMX through the classical emulations on the H2 molecule potential energy surface and the Anderson model with a broad range of correlation strength. The results show that our approach is robust and flexible. Good agreements with exact solutions can be maintained even at the dissociation and strong correlation limits.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2020 reference point for readers tracking recent quantum research.
  • Further advancement of quantum computing (QC) is contingent on enabling many-body models that avoid deep circuits and excessive use of CNOT gates.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2009.05709 [2] arXiv https://arxiv.org/abs/2009.05709 [3] Publisher https://arxiv.org/abs/2009.05709

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