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A java snippet for bell circuit on Amazon Braket simulator is below. Please make sure to setup AWS creds with Braket Full Access.
import com.amazonaws.services.braket.AmazonBraket;
import com.amazonaws.services.braket.AmazonBraketClientBuilder;
import com.amazonaws.services.braket.model.CreateQuantumTaskRequest;
import com.amazonaws.services.braket.model.CreateQuantumTaskResult;
import org.json.JSONObject;
class BraketTest{
public static void main(String args[]){
AmazonBraket braketClient = AmazonBraketClientBuilder.standard().build();
CreateQuantumTaskRequest request = new CreateQuantumTaskRequest()
.withDeviceArn("arn:aws:braket:::device/quantum-simulator/amazon/sv1")
.withDeviceParameters(BraketTest.getDeviceParameters())
.withOutputS3Bucket("<your s3 bucket name>")
.withOutputS3KeyPrefix("bellCircuit")
.withShots(1000L)
.withAction(getOpenQasmAction());
CreateQuantumTaskResult result = braketClient.createQuantumTask(request);
System.out.println(result.getQuantumTaskArn());
}
public static String getOpenQasmAction() {
String program = "OPENQASM 3; qubit[2] q; bit[2] ro; h q[0]; cnot q[0], q[1]; ro[0] = measure q[0]; ro[1] = measure q[1];";
JSONObject action = new JSONObject();
JSONObject header = new JSONObject();
header.put("name", "braket.ir.openqasm.program");
header.put("version", "1");
action.put("braketSchemaHeader", header);
action.put("source", program);
return action.toString();
}
public static String getDeviceParameters() {
JSONObject deviceParameters = new JSONObject();
JSONObject header = new JSONObject();
header.put("name", "braket.device_schema.simulators.gate_model_simulator_device_parameters");
header.put("version", "1");
JSONObject deviceSchema = new JSONObject();
deviceSchema.put("name", "braket.device_schema.gate_model_parameters");
deviceSchema.put("version", "1");
JSONObject paradigmParameters = new JSONObject();
paradigmParameters.put("qubitCount", 2);
paradigmParameters.put("braketSchemaHeader", deviceSchema);
deviceParameters.put("paradigmParameters", paradigmParameters);
deviceParameters.put("braketSchemaHeader", header);
return deviceParameters.toString();
}
}
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