SparsePauliOp.from_operator

static SparsePauliOp.from_operator(obj, atol=None, rtol=None)[source]

Construct from an Operator objector.

Note that the cost of this contruction is exponential as it involves taking inner products with every element of the N-qubit Pauli basis.

Parameters

  • obj (Operator) – an N-qubit operator.

  • atol (float) – Optional. Absolute tolerance for checking if coefficients are zero (Default: 1e-8).

  • rtol (float) – Optinoal. relative tolerance for checking if coefficients are zero (Default: 1e-5).

Returns

the SparsePauliOp representation of the operator.

Return type

SparsePauliOp

Raises

QiskitError – if the input operator is not an N-qubit operator.