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Quantum Physics

Probability amplitudes and interference

Use complex probability amplitudes to calculate outcomes and distinguish interference from ordinary probability mixtures.

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Where this chapter sits in the course

Lessons

Chapter 5 of 6 · 7 short lessons · 29 min
  1. 1Complex probability amplitudes4 min
  2. 2The Born rule for amplitudes4 min
  3. 3Adding amplitudes4 min
  4. 4Relative phase and interference4 min
  5. 5Incoherent probability mixtures4 min
  6. 6Probability normalization3 min
  7. 7Challenge: Probability amplitudes and interference6 min

What you'll learn

  • Calculate probabilities from complex amplitudes
  • Predict interference from relative phase
  • Distinguish coherent alternatives from probability mixtures

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