Physics:Quantum Bell state: Difference between revisions
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{{Short description|Maximally entangled two-qubit quantum state}} | {{Short description|Maximally entangled two-qubit quantum state}} | ||
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|image=[[File:Quantum_Bell_state_educational_yellow.png|430px|Bell states as correlated two-qubit entangled states used in quantum information.]] | |image=[[File:Quantum_Bell_state_educational_yellow.png|430px|Bell states as correlated two-qubit entangled states used in quantum information.]] | ||
|text= | |text=A Bell state is a Book I topic in the Quantum Collection. Bell states are maximally entangled two-qubit states that form a convenient basis for describing correlations with no classical counterpart. Measurements on the two parts of a Bell state can violate Bell inequalities, showing that quantum theory cannot be explained by simple local hidden-variable models. Bell states are also practical resources in quantum information. They appear in teleportation, superdense coding, entanglement swapping, quantum repeaters, and tests of nonlocality. They make the abstract structure of entanglement concrete in the smallest composite quantum systems. | ||
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== Overview == | == Overview == | ||
Placeholder: introduce Bell states as maximally entangled two-qubit states and explain why they are central in quantum information. | Placeholder: introduce Bell states as maximally entangled two-qubit states and explain why they are central in quantum information. | ||
Latest revision as of 22:58, 23 May 2026
A Bell state is a Book I topic in the Quantum Collection. Bell states are maximally entangled two-qubit states that form a convenient basis for describing correlations with no classical counterpart. Measurements on the two parts of a Bell state can violate Bell inequalities, showing that quantum theory cannot be explained by simple local hidden-variable models. Bell states are also practical resources in quantum information. They appear in teleportation, superdense coding, entanglement swapping, quantum repeaters, and tests of nonlocality. They make the abstract structure of entanglement concrete in the smallest composite quantum systems.
Overview
Placeholder: introduce Bell states as maximally entangled two-qubit states and explain why they are central in quantum information.
Key ideas
Placeholder: cover entanglement, two-qubit correlations, Bell basis, quantum teleportation, superdense coding.
Bell basis
Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.
Correlations
Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.
Preparation in circuits
Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.
Uses in protocols
Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.
See also
Table of contents (217 articles)
Index
Full contents
References
Source attribution: Physics:Quantum Bell state
