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The qdrift function implements the qDrift Trotter evolution of Ref. [1] . Function: qdrift Arguments:
  • pauli_operator: CArray[PauliTerm],
  • evolution_coefficient: CReal,
  • num_qdrift: CInt,
  • qbv: QArray[QBit],

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Example

from classiq import *


@qfunc
def main(qba: Output[QArray[QBit]]):
    allocate(2, qba)
    qdrift(
        Pauli.X(0) * Pauli.Y(1) + 0.5 * Pauli.Z(0),
        evolution_coefficient=2.0,
        num_qdrift=5,
        qbv=qba,
    )


qmod = create_model(main)
qprog = synthesize(qmod)

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References

[1] E. Campbell, Random Compiler for Fast Hamiltonian Simulation, (2019). https://arxiv.org/abs/1811.08017