[2026] PTE Academic Reading - Multiple Choice, Multiple Answers

Quantum computing represents a radical departure from classical computing, utilizing the principles of quantum mechanics to process information.While classical computers use bits that exist as either a zero or a one, quantum computers use qubits, which can exist in a state of superposition.This means a qubit can represent both zero and one simultaneously, allowing quantum systems to perform complex calculations at exponentially faster speeds than traditional supercomputers.Another key principle is entanglement, a phenomenon where qubits become interconnected such that the state of one instantly influences the state of another, regardless of the distance between them.These unique properties enable quantum computers to solve problems that are currently intractable, such as simulating molecular structures for drug discovery or optimizing global logistics networks.However, maintaining the stability of qubits is a significant hurdle, as they are extremely sensitive to environmental interference, a problem known as decoherence.To minimize this, quantum processors must be kept at temperatures colder than outer space, often near absolute zero.Furthermore, the potential of quantum computing to break modern encryption methods has prompted the development of 'quantum-resistant' cryptography.Despite these challenges, the field is advancing rapidly, with tech giants and governments investing billions to achieve 'quantum supremacy.'As the technology matures, it is expected to redefine the boundaries of computational power and scientific research.