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Investigate the superposition and measurement principles in this hands-on lesson using the polarization of light. Learn about the role of probability in quantum mechanics, wave function collapse, and how a quantum superposition is always relative to a measurement choice.

• The Two Golden Rules of Quantum Mechanics - Student Activity
• The Two Golden Rules of Quantum Mechanics - Answer Key

Understand how the quantum superposition and measurement principles can be used to build secure communication systems. Learn about quantum information and measurement disturbance through a cryptography protocol based on quantum mechanics called quantum key distribution.

• Quantum Cryptography - Student Activity
• Quantum Cryptography - Answer Key

An interactive group role-playing activity where students explore how the mechanics of quantum measurement allow for perfectly secure cryptography. Both in-person and virtual lesson plans are available.

• BB84: Quantum Coins (Virtual Version) - Student Activity
• BB84: Quantum Coins (Virtual Version) - Answer Key
• BB84: Quantum Coins - Student Acitivity
• BB84: Quantum Coins - Answer Key

Learn how wave and particle behaviour can both be seen in one experiment. Create wave and particle models for describing the Mach-Zehnder interferometer using coins and puzzles and see how they compare to real laboratory data. Explore how quantum objects break the wave-particle binary and can behave like one or the other depending on how they are measured and analyzed.

• Wave-Particle Duality, Revisited - Student Activity
• Wave-Particle Duality, Revisited - Interferometer Model
• Wave-Particle Duality, Revisited - Interactive PowerPoint
• Wave-Particle Duality, Revisited - Answer Key 

Learn a simple quantum algorithm that can be implemented with a single photon in an interferometer. Through analyzing the Deutsch-Josza algorithm, learn about how quantum computers use superposition and measurement to solve problems in new ways.

• Quantum Computing with Interferometers - Student Activity
• Quantum Computing with Interferometers - Answer Key

Measure and verify the uncertainty principle in a hands-on activity using laser pointers. Print your own single and double slits from home and learn how more certainty in position leads to more uncertainty in momentum. Understand how the uncertainty principle itself can be used to make accurate measurements.

• The Uncertainty Principle - Student Activity
• The Uncertainty Principle and Double Slit Activity Cards
• The Uncertainty Principle - Answer Key