Importing Qiskit:
Import the necessary modules to start working with Qiskit:
from qiskit import *
Creating Quantum Circuits:
Quantum circuits in Qiskit are built using the QuantumCircuit class. You can add gates to the circuit to create quantum operations.pythonCopy code
# Create a quantum circuit with 2 qubits circuit = QuantumCircuit(2)
# Add gates to the circuit circuit.h(0)
# Apply Hadamard gate to qubit 0 circuit.cx(0, 1)
# Apply CNOT gate from qubit 0 to qubit 1
Simulating Circuits:
You can use Qiskit’s built-in simulators to simulate the behaviour of your quantum circuits. Aer provides various backends for simulation.python
simulator = Aer.get_backend('qasm_simulator')
result = execute(circuit, simulator).result()
from qiskit.tools.visualization import plot_histogram
plot_histogram(result.get_counts(circuit))
The Aer simulator is not always installed with qiskit. To get around this, use pip install qiskit-aer in your terminal. It is also important after this to shut down your jupyter notebook and reload it.
The results of this code should look like this:
Find out more here.
