A quantum computer uses – two‑level quantum systems (e.g., electron spin or photon polarisation). Qubits can be in (|0\rangle), (|1\rangle), or a superposition (\alpha|0\rangle + \beta|1\rangle). Multiple qubits can be entangled , meaning their states are correlated in ways impossible for classical bits.
In 2016, the IBM Quantum team demonstrated the first-ever quantum simulation of a molecule using a quantum computer. Since then, researchers have made significant progress in developing quantum algorithms for quantum chemistry, including the quantum phase estimation (QPE) algorithm and the variational quantum eigensolver (VQE) algorithm. quantum chemistry and computing for the curious read online
# Run this in a Jupyter notebook with qiskit installed from qiskit_nature.units import DistanceUnit from qiskit_nature.second_q.drivers import PySCFDriver from qiskit_nature.second_q.mappers import ParityMapper from qiskit_nature.second_q.algorithms import GroundStateEigensolver from qiskit_algorithms import NumPyMinimumEigensolver A quantum computer uses – two‑level quantum systems (e