Quantum Computing Basics

• Quantum computers harness the phenomena of quantum mechanics, such as superposition, interference, and entanglement.
• Quantum computers are based on the quantum bit, or "qubit".
• A qubit can be in a 1 or 0 quantum state, or in a superposition of the 1 and 0 states.
• When it is measured, it is always 0 or 1; the probability of either outcome depends on the qubit's quantum state immediately prior to measurement.
• One model that does not use qubits is continuous variable quantum computation.
• Quantum computers obey the Church–Turing thesis, which means that while quantum computers provide no additional advantages over classical computers in terms of computability, quantum algorithms for certain problems have significantly lower time complexities than corresponding known classical algorithms.
• Quantum computers are believed to be able to quickly solve certain problems that no classical computer could solve in any feasible amount of time—a feat known as "quantum supremacy."

Test your knowledge about the fundamental concepts of quantum computing, including qubits, superposition, and quantum algorithms. Explore the principles behind quantum supremacy and its potential to solve problems beyond the reach of classical computers.