WState

QuICT.algorithm.state.WState

WState(N: int, method: str = 'linear', name: str = 'W')

Bases: CompositeGate

Reference

[1]: Cruz, Diogo, Romain Fournier, Fabien Gremion, Alix Jeannerot, Kenichi Komagata, Tara Tosic, Jarla Thiesbrummel, et al. “Efficient Quantum Algorithms for \(GHZ\) and \(W\) States, and Implementation on the IBM Quantum Computer.” Advanced Quantum Technologies 2, no. 5-6 (June 2019): 1900015. https://doi.org/10.1002/qute.201900015.

Source code in QuICT/algorithm/state/w_state.py

def __init__(
    self,
    N: int,
    method: str = "linear",
    name: str = "W"
):
    if N < 1:
        raise ValueError(f"N can not be smaller than 1, but given {N}.")

    if method not in ["linear", "tree"]:
        raise ValueError(f"method must be chosen from [linear, tree] but given {method}.")

    super().__init__(name)

    X | self(0)

    B = self._b_gate

    if method == "linear":
        for i in range(N - 1):
            B(pN=N - i) | self([i, i + 1])
        return