cirq.PauliSumExponential

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

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.

qubits

Methods

matrix

View source

matrix() -> np.ndarray

Reconstructs matrix of self from underlying Pauli sum exponentials.

Raises
ValueError if exponent is parameterized.

with_qubits

View source

with_qubits(
    *new_qubits
) -> 'PauliSumExponential'

__eq__

View source

__eq__(
    other: _SupportsValueEquality
) -> bool

__iter__

View source

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

__ne__

View source

__ne__(
    other: _SupportsValueEquality
) -> bool

__pow__

View source

__pow__(
    exponent: int
) -> 'PauliSumExponential'