Quantum Computational | Skills Pool

Quantum Computational | Skills Pool

# Example: VQE framework for quantum chemistry
def vqe(ansatz, hamiltonian, optimizer):
    """
    Find ground state energy using quantum computer.
    ansatz: Parameterized quantum circuit
    hamiltonian: Molecular Hamiltonian
    optimizer: Classical optimizer
    """
    def objective(params):
        # Prepare quantum state
        state = ansatz.apply(params)
        
        # Measure expectation value
        energy = hamiltonian.expectation(state)
        
        return energy
    
    return optimizer.minimize(objective)

# Ansatz circuits
ansatz_types = {
    'UCCSD': 'Unitary coupled cluster',
    'Hardware Efficient': 'Hardware-adapted layers',
    'ADAPT': 'Iterative ansatz construction'
}