qiskit.opflow.evolutions.QDrift¶
-
class
QDrift(reps=1)[source]¶ The QDrift Trotterization method, which selects each each term in the Trotterization randomly, with a probability proportional to its weight. Based on the work of Earl Campbell in https://arxiv.org/abs/1811.08017.
- Parameters
reps (
int) – The number of times to repeat the Trotterization circuit.
-
__init__(reps=1)[source]¶ - Parameters
reps (
int) – The number of times to repeat the Trotterization circuit.
Methods
__init__([reps])- type reps
int
convert(operator)Convert a
SummedOpinto aComposedOporCircuitOprepresenting an approximation of e^-i*``op_sum``.Attributes
The number of repetitions to use in the Trotterization, improving the approximation accuracy.
-
convert(operator)[source]¶ Convert a
SummedOpinto aComposedOporCircuitOprepresenting an approximation of e^-i*``op_sum``.- Parameters
operator (
OperatorBase) – TheSummedOpto evolve.- Return type
OperatorBase- Returns
The Operator approximating op_sum’s evolution.
- Raises
TypeError – A non-SummedOps Operator is passed into
convert.
-
property
reps¶ The number of repetitions to use in the Trotterization, improving the approximation accuracy.
- Return type
int