cirq.PauliSumExponential

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Represents an operator defined by the exponential of a PauliSum.

cirq.PauliSumExponential(
    pauli_sum_like: 'cirq.PauliSumLike',
    exponent: Union[int, float, sympy.Expr] = 1,
    atol: float = 1e-08
)

Used in the notebooks

Used in the tutorials
PauliStrings and Observables

Given a hermitian/anti-hermitian PauliSum PS_1 + PS_2 + ... + PS_N, this class returns an operation which is equivalent to exp(j * exponent * (PS_1 + PS_2 + ... + PS_N)).

This class only supports commuting Pauli terms.

Attributes
qubits

Methods

matrix

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matrix() -> np.ndarray

Reconstructs matrix of self from underlying Pauli sum exponentials.

Raises
ValueError	if exponent is parameterized.

with_qubits

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with_qubits(
    *new_qubits
) -> 'PauliSumExponential'

__eq__

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__eq__(
    other: _SupportsValueEquality
) -> bool

__iter__

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__iter__() -> Iterator['cirq.PauliStringPhasor']

__ne__

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__ne__(
    other: _SupportsValueEquality
) -> bool

__pow__

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__pow__(
    exponent: int
) -> 'PauliSumExponential'