# qiskit.opflow.evolutions.QDrift¶

class QDrift(reps=1)[Quellcode]

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.

Parameter

reps (int) – The number of times to repeat the Trotterization circuit.

__init__(reps=1)[Quellcode]
Parameter

reps (int) – The number of times to repeat the Trotterization circuit.

Methods

 __init__([reps]) type reps int convert(operator) Convert a SummedOp into a ComposedOp or CircuitOp representing an approximation of e^-i*op_sum.

Attributes

 reps The number of repetitions to use in the Trotterization, improving the approximation accuracy.
convert(operator)[Quellcode]

Convert a SummedOp into a ComposedOp or CircuitOp representing an approximation of e^-i*op_sum.

Parameter

operator (OperatorBase) – The SummedOp to evolve.

Rückgabetyp

OperatorBase

Rückgabe

The Operator approximating op_sum’s evolution.

Verursacht

TypeError – A non-SummedOps Operator is passed into convert.

property reps

The number of repetitions to use in the Trotterization, improving the approximation accuracy.

Rückgabetyp

int