Foundations · Michael Nielsen

Preparing the Bell state

Name: Preparing the Bell state
Uploaded: 2010-11-25
Description: How do circuit operations prepare a Bell state? Michael Nielsen moves from a named entangled state to the steps used to construct it in a teaching circuit. This focused lesson connects the controlled-NOT material with later communication protocols. It is a mathematical preparation exercise, not a report of a new laboratory experiment.

Original upload Nov 25, 2010

Engineers installing an IBM Quantum System One cryogenic assembly at Fraunhofer

Context photo · Holger Muench / IBM · CC BY 2.0

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Engineers install IBM Quantum System One at Fraunhofer. Archival quantum-computing context, not a video frame or the apparatus of another study.

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How do circuit operations prepare a Bell state? Michael Nielsen moves from a named entangled state to the steps used to construct it in a teaching circuit. This focused lesson connects the controlled-NOT material with later communication protocols. It is a mathematical preparation exercise, not a report of a new laboratory experiment.

Video by Michael Nielsen. Added to QubitWire September 29, 2026.

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