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Execution on Amazon Braket Cloud

The Classiq executor supports execution on Amazon Braket's cloud simulators and hardware.


Backends may sometimes be unavailable. Check the availability windows with Amazon Braket.


Execution on Amazon Braket requires an AWS account, and a role that Classiq can assume for execution.

from classiq.execution import AwsBackendPreferences

preferences = AwsBackendPreferences(
    backend_name="Name of requested simulator or hardware",
    aws_role_arn="ARN of the CrossAccountRoleForBraket role",
    s3_bucket_name="S3 bucket name to save the results",
    s3_folder="The folder path within the S3 bucket, where the results will be saved",
    job_timeout="Timeout for execution (Optional)",

Opening info tab

Initial Account Setup

Before first use, the Classiq platform needs your permissions to connect to your AWS account. This is done by creating a cross-account role.

We provide you with the attached CloudFormation file. Deploying it to your account will create the cross-account role that only Classiq can use, and it only has the permissions needed for Braket.

To deploy the CloudFormation file, please follow the following instructions:

  1. Download the file
  2. Install AWS CLI
  3. Contact Classiq support to obtain the parameters:
  4. Execute the following command:
    aws cloudformation create-stack --stack-name ClassiqBraketRole --template-body file:// --capabilities CAPABILITY_NAMED_IAM --parameters ParameterKey=TrustedAccount,ParameterValue=${CORRECT_TRUSTED_ACCOUNT} ParameterKey=ExternalId,ParameterValue=${CORRECT_EXTERNAL_ID_VALUE}


The required parameters may differ between users. Contacting Classiq support is required!

In order to learn more about IAM roles, visit AWS documentation

Required Credentials

When executing via the Classiq platform using AWS Cloud, there are several required credentials:

  1. aws_role_arn
    1. Make sure the initial setup step is completed.
    2. Go to the AWS Identity and Access Management (IAM) service.
    3. Under Roles, search for the CrossAccountRoleForBraket role.
    4. Copy this role's ARN and use it as the aws_role_arn.
  2. s3_bucket_name
    1. Create a new bucket. It's name must start with amazon-braket-.
    2. Use the bucket's name as the s3_bucket_name. This is the bucket that will save the execution results.
  3. s3_folder
    1. Enter the path to the folder within the S3 bucket. This is the path within the bucket where the execution results will be saved.

For further support, contact Classiq support.

Supported Backends

The Classiq executor supports any available gate-based Amazon Braket simulator and quantum hardware.

Included hardware:

  • "IonQ device"
  • "Lucy"
  • "Aspen-11"
  • "Aspen-M-1"

Included simulators:

  • "SV1"
  • "TN1"
  • "dm1"