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---
title: Suzuki (v0.31)
description: API reference for qiskit.aqua.operators.evolutions.Suzuki in qiskit v0.31
in_page_toc_min_heading_level: 1
python_api_type: class
python_api_name: qiskit.aqua.operators.evolutions.Suzuki
---
# Suzuki
<Class id="qiskit.aqua.operators.evolutions.Suzuki" isDedicatedPage={true} github="https://github.com/qiskit-community/qiskit-aqua/tree/stable/0.9/qiskit/aqua/operators/evolutions/trotterizations/suzuki.py" signature="Suzuki(reps=1, order=2)" modifiers="class">
Bases: `qiskit.aqua.operators.evolutions.trotterizations.trotterization_base.TrotterizationBase`
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).
**Parameters**
* **reps** (`int`) The number of times to repeat the expansion circuit.
* **order** (`int`) The order of the expansion to perform.
## Methods
<span id="qiskit-aqua-operators-evolutions-suzuki-convert" />
### convert
<Function id="qiskit.aqua.operators.evolutions.Suzuki.convert" signature="Suzuki.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.
**Return type**
`OperatorBase`
**Returns**
The Operator approximating op\_sums evolution.
**Raises**
**TypeError** A non-SummedOps Operator is passed into `convert`.
</Function>
## Attributes
### order
<Attribute id="qiskit.aqua.operators.evolutions.Suzuki.order">
returns order
**Return type**
`int`
</Attribute>
### reps
<Attribute id="qiskit.aqua.operators.evolutions.Suzuki.reps">
The number of repetitions to use in the Trotterization, improving the approximation accuracy.
**Return type**
`int`
</Attribute>
</Class>