Qu'est-ce qu'Amazon Braket ?
Amazon Braket est un service d'informatique quantique entièrement géré qui vous permet d'explorer et d'expérimenter des ordinateurs quantiques de plusieurs fournisseurs — le tout via un SDK Python cohérent. Le simulateur local est entièrement gratuit. Les simulateurs cloud facturent de faibles frais par tâche. Les tirs sur QPU réels sont facturés au tir.
Simulateur local
S'exécute sur votre machine
Gratuit pour toujours
Simulateurs cloud
SV1, DM1, TN1
~0,075 $/tâche + calcul
QPU réel
Matériel IonQ, OQC
0,01–0,90 $/tir
Installation et configuration
terminal
pip install amazon-braket-sdk # AWS credentials (needed for cloud features) # Option 1: AWS CLI aws configure # Option 2: Environment variables export AWS_DEFAULT_REGION=us-east-1 export AWS_ACCESS_KEY_ID=your_key export AWS_SECRET_ACCESS_KEY=your_secretSimulateur local gratuit
Le LocalSimulator est entièrement gratuit, s'exécute sur votre machine et ne nécessite aucun compte AWS.
braket_local.py
from braket.circuits import Circuit, FreeParameter from braket.devices import LocalSimulator # Free — no AWS credentials needed device = LocalSimulator() # Build a Bell state circuit circuit = Circuit() circuit.h(0) circuit.cnot(0, 1) circuit.probability() # Return outcome probabilities task = device.run(circuit, shots=0) # shots=0 for exact probabilities result = task.result() print(result.values) # [[0.5, 0, 0, 0.5]] # With sampling (shots) circuit2 = Circuit().h(0).cnot(0, 1) task2 = device.run(circuit2, shots=1000) counts = task2.result().measurement_counts print(counts) # {'00': ~500, '11': ~500}Circuits paramétriques
braket_parametric.py
from braket.circuits import Circuit, FreeParameter from braket.devices import LocalSimulator # FreeParameters for variational circuits theta = FreeParameter("theta") phi = FreeParameter("phi") circuit = Circuit() circuit.ry(0, theta) circuit.ry(1, phi) circuit.cnot(0, 1) circuit.expectation(observable=braket.Observable.Z() @ braket.Observable.Z(), target=[0, 1]) device = LocalSimulator() # Sweep parameters import numpy as np for t in np.linspace(0, 2 * np.pi, 20): task = device.run(circuit, shots=200, inputs={"theta": t, "phi": 0.5}) result = task.result() print(f"theta={t:.2f}: {result.values}")Simulateurs cloud (SV1, DM1, TN1)
braket_cloud_sim.py
from braket.aws import AwsDevice from braket.circuits import Circuit # SV1 — Statevector simulator (up to 34 qubits) sv1 = AwsDevice("arn:aws:braket:::device/quantum-simulator/amazon/sv1") # DM1 — Density matrix with noise (up to 17 qubits) dm1 = AwsDevice("arn:aws:braket:::device/quantum-simulator/amazon/dm1") # TN1 — Tensor network (up to 50 qubits, sparse circuits) tn1 = AwsDevice("arn:aws:braket:::device/quantum-simulator/amazon/tn1") circuit = Circuit().h(0).cnot(0, 1) # Note: cloud sims have per-task + compute costs (~$0.075/task) task = sv1.run( circuit, shots=1000, s3_destination_folder=("your-s3-bucket", "results/") ) print(task.result().measurement_counts)Matériel QPU réel
braket_hardware.py
from braket.aws import AwsDevice from braket.circuits import Circuit # IonQ Aria (trapped-ion, ~$0.01/shot) ionq_device = AwsDevice( "arn:aws:braket:us-east-1::device/qpu/ionq/Aria-1" ) # Oxford Quantum Circuits (superconducting) oqc_device = AwsDevice( "arn:aws:braket:eu-west-2::device/qpu/oqc/Lucy" ) circuit = Circuit().h(0).cnot(0, 1) # Check device availability before submitting print(ionq_device.status) print(ionq_device.properties.paradigm.qubitCount) # Submit (costs apply per shot on real hardware) task = ionq_device.run(circuit, shots=50) print(task.result().measurement_counts)💡
Also available via HLQuantum
Want to run the same circuit on multiple backends without rewriting your code? HLQuantum abstracts this SDK (and 5 others) behind a single unified API.
python
import hlquantum as hlq qc = hlq.Circuit(2) qc.h(0).cx(0, 1).measure_all() # One line to switch between any backend result = hlq.run(qc, shots=1024) # auto-detect result = hlq.run(qc, shots=1024, backend="braket") # explicit