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---
title: Suzuki
description: API reference for qiskit.opflow.evolutions.Suzuki
in_page_toc_min_heading_level: 1
python_api_type: class
python_api_name: qiskit.opflow.evolutions.Suzuki
---
# Suzuki
<Class id="qiskit.opflow.evolutions.Suzuki" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.25/qiskit/opflow/evolutions/trotterizations/suzuki.py" signature="qiskit.opflow.evolutions.Suzuki(reps=1, order=2)" modifiers="class">
Bases: [`TrotterizationBase`](qiskit.opflow.evolutions.TrotterizationBase "qiskit.opflow.evolutions.trotterizations.trotterization_base.TrotterizationBase")
Deprecated: Suzuki Trotter expansion, composing the evolution circuits of each Operator in the sum together by a recursive “bookends” strategy, repeating the whole composed circuit `reps` times.
Detailed in [https://arxiv.org/pdf/quant-ph/0508139.pdf](https://arxiv.org/pdf/quant-ph/0508139.pdf).
<Admonition title="Deprecated since version 0.24.0" type="danger">
The class `qiskit.opflow.evolutions.trotterizations.suzuki.Suzuki` is deprecated as of qiskit-terra 0.24.0. It will be removed no earlier than 3 months after the release date. For code migration guidelines, visit [https://qisk.it/opflow\_migration](https://qisk.it/opflow_migration).
</Admonition>
**Parameters**
* **reps** ([*int*](https://docs.python.org/3/library/functions.html#int "(in Python v3.12)")) The number of times to repeat the expansion circuit.
* **order** ([*int*](https://docs.python.org/3/library/functions.html#int "(in Python v3.12)")) The order of the expansion to perform.
## Attributes
### order
<Attribute id="qiskit.opflow.evolutions.Suzuki.order">
returns order
</Attribute>
### reps
<Attribute id="qiskit.opflow.evolutions.Suzuki.reps">
The number of repetitions to use in the Trotterization, improving the approximation accuracy.
</Attribute>
## Methods
### convert
<Function id="qiskit.opflow.evolutions.Suzuki.convert" signature="convert(operator)">
Convert a `SummedOp` into a `ComposedOp` or `CircuitOp` representing an approximation of e^-i\*\`\`op\_sum\`\`.
**Parameters**
**operator** ([*OperatorBase*](qiskit.opflow.OperatorBase "qiskit.opflow.operator_base.OperatorBase")) The `SummedOp` to evolve.
**Returns**
The Operator approximating op\_sums evolution.
**Raises**
[**TypeError**](https://docs.python.org/3/library/exceptions.html#TypeError "(in Python v3.12)") A non-SummedOps Operator is passed into `convert`.
**Return type**
[*OperatorBase*](qiskit.opflow.OperatorBase "qiskit.opflow.operator_base.OperatorBase")
</Function>
</Class>