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CAFQA

(Re-)Implementation of an interface for the Variational Quantum Eigensolver and the CAFQA scheme (original code: https://github.com/rgokulsm/CAFQA).

CAFQA is a special case of VQE where the ansatz is built of Clifford gates only and the optimization is therefore performed over a discrete set. This implementation uses Stim for fast Clifford circuit simulation and HyperMapper for Bayesian Optimization over the discrete search space.

Full list of dependencies (pip install ...):

  • numpy
  • qiskit
  • qiskit[optimize]
  • qiskit[nature]
  • stim
  • scikit-quant
  • hypermapper
  • pyscf

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