What is Quantum supremacy?

What is Quantum supremacy?

• A. A benchmark test
• B. When a quantum computer solves a specific task faster than any classical computer.
• C. A 53-qubit processor
• D. A type of error in quantum operations

Answer: (B)

Quantum supremacy means a quantum computer performs a task in a way that a classical computer would take infeasibly long to reproduce, demonstrating a clear advantage for that specific problem. It’s about beating the best possible classical approach for a chosen task, not about being faster at every problem or being inherently practical. The task is typically crafted to highlight how quantum systems explore many possibilities in parallel, making certain computations effectively intractable for classical machines as the problem scales. A famous example is a demonstration where a quantum processor with many qubits ran a random circuit and produced results faster than the best known classical method could, illustrating the potential of quantum devices. This milestone doesn’t imply universal, practical usefulness, nor does it hinge on a particular piece of hardware or on errors.

Quantum supremacy means a quantum computer performs a task in a way that a classical computer would take infeasibly long to reproduce, demonstrating a clear advantage for that specific problem. It’s about beating the best possible classical approach for a chosen task, not about being faster at every problem or being inherently practical. The task is typically crafted to highlight how quantum systems explore many possibilities in parallel, making certain computations effectively intractable for classical machines as the problem scales. A famous example is a demonstration where a quantum processor with many qubits ran a random circuit and produced results faster than the best known classical method could, illustrating the potential of quantum devices. This milestone doesn’t imply universal, practical usefulness, nor does it hinge on a particular piece of hardware or on errors.