Chemistry on Quantum Computers with Virtual Quantum Subspace Expansion.

@article{Urbnek2020ChemistryOQ,
  title={Chemistry on Quantum Computers with Virtual Quantum Subspace Expansion.},
  author={M. Urb{\'a}nek and Daan Camps and Roel Van Beeumen and W. D. de Jong},
  journal={Journal of chemical theory and computation},
  year={2020}
}
Simulating chemical systems on quantum computers has been limited to a few electrons in a minimal basis. We demonstrate experimentally that the virtual quantum subspace expansion (Takeshita, T.; Phys. Rev. X 2020, 10, 011004, 10.1103/PhysRevX.10.011004) can achieve full basis accuracy for hydrogen and lithium dimers, comparable to simulations requiring 20 or more qubits. We developed an approach to minimize the impact of experimental noise on the stability of the generalized eigenvalue problem… Expand
2 Citations

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