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Quantum computing

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A quantum computer is a real or theoretical computer that exploits quantum phenomena like superposition and entanglement in an essential way. It is widely believed that a quantum computer could perform some calculations exponentially faster than any classical computer. For example, a large-scale quantum computer could break some widely used encryption schemes and aid physicists in performing physical simulations. However, current hardware implementations of quantum computation are largely experimental and only suitable for specialized tasks.

Quantum computing - Wikipedia Jump to content From Wikipedia, the free encyclopedia Computer hardware technology that uses quantum mechanics IBM quantum computer demo at ITU WTSA 2024 in Delhi Bloch sphere representation of a qubit. The state | ψ ⟩ = α | 0 ⟩ + β | 1 ⟩ {\displaystyle |\psi \rangle =\alpha |0\rangle +\beta |1\rangle } is a point on the surface of the sphere, partway between the poles, | 0 ⟩ {\displaystyle |0\rangle } and | 1 ⟩ {\displaystyle |1\rangle } . A quantum computer is a real or theoretical computer that exploits qu

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