Part 5/12:
The scalability dilemma is thus not a problem of producing qubits but rather of building operational, reliable devices with vast numbers of qubits. The challenge lies in connecting multiple cooling systems without escalating error rates—a technical hurdle that current developments have not surmounted. The image of massive "chandeliers," or cooling apparatuses, hints at the impracticality of scaling superconducting quantum computers beyond a certain threshold, estimated around a thousand qubits.