QDrift
class qiskit.opflow.evolutions.QDrift(reps=1)
Bases: TrotterizationBase
Deprecated: 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(opens in a new tab).
The class qiskit.opflow.evolutions.trotterizations.qdrift.QDrift is deprecated as of qiskit-terra 0.24.0. It will be removed in the Qiskit 1.0 release. For code migration guidelines, visit https://qisk.it/opflow_migration(opens in a new tab).
Parameters
reps (int(opens in a new tab)) – The number of times to repeat the Trotterization circuit.
Attributes
reps
The number of repetitions to use in the Trotterization, improving the approximation accuracy.
Methods
convert
convert(operator)
Convert a SummedOp into a ComposedOp or CircuitOp representing an approximation of e^-i*``op_sum``.
Parameters
operator (OperatorBase) – The SummedOp to evolve.
Returns
The Operator approximating op_sum’s evolution.
Raises
TypeError(opens in a new tab) – A non-SummedOps Operator is passed into convert.
Return type