2026年2月托福机经套卷(第8套) - Read an Academic Passage / 2 Q3

Quantum Computing Quantum computing promises to revolutionize technology by delivering unprecedented computational power. Traditional computers store data in binary bits, representing 0 or 1. Quantum computers use qubits, which can represent 0, 1, or both simultaneously (a state called superposition). This allows quantum computers to process vast amounts of data simultaneously, solving complex problems much faster than classical computers. Quantum computing has promising applications in cryptography—techniques for encoding and decoding messages. Current encryption (encoding) methods rely on complex algorithms that classical computers struggle to break. Quantum computers could potentially break these encryption algorithms with ease, requiring new, quantum-resistant techniques. Researchers are exploring such methods to secure data in a post-quantum world. One challenge to fully realizing quantum computing is that qubits are highly sensitive to external disturbances. Maintaining coherence, the state needed by qubits to perform calculations, requires extremely low temperatures and isolation from environmental noise, such as magnetic or electric field fluctuations. Despite the challenges, progress is accelerating. Scientists are developing error-correcting codes and stable qubit designs to address these issues. Quantum computing holds promise for advancements in fields like medicine, finance, and artificial intelligence.