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World 4 · Two qubits, one state · 9 min · PRO

Build a Bell pair

PRO · Quantum Lab

World 4: Two qubits, one state is part of PRO

The first world of Quantum Lab is free. PRO opens the other 11 lessons in 3 worlds — simulations, quizzes and all.

  • Two superpositions need not be entangled
  • Measure one, predict the other
  • The hidden difference between Bell states
PRO includes
  • All 26 labs — every world, every lesson
  • Practice exams and certificates

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