Quantum

Quantum Tunnel

Launch a wave packet at a barrier and explore transmission.

A packet meets a barrier

Wave evolution

Compare the incoming, reflected, and transmitted packet. Open advanced controls to paint a potential.

Live measurements

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What you are seeing

A packet meets a barrier

Watch reflected and transmitted components, and look for changes in transmission near resonance.

A one-dimensional wave-equation model in normalized units. Grid spacing, boundaries, and numerical integration affect accuracy.