Interactive BB84 demo
The main activity: send polarized photons, choose bases, and build a secret key together.
Outreach
Interactive demos and classroom materials we use to teach quantum physics concepts, built for the Buffalo Astronomical Association and other outreach events.
BB84 Quantum Key Distribution
A hands-on activity where students play Alice, Bob, and Eve to discover how quantum mechanics makes eavesdropping detectable.
Why Eve gets caught
Step through every intercept-and-resend case to see exactly where the eavesdropper leaves traces.
After the photons
What happens next: sifting, error estimation, and privacy amplification.
Student worksheets
Printable worksheets for running the activity in a classroom.