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Quantum key distribution with entangled spin 1/2 particles

Quantum key distribution with entangled spin 1/2 particles

The Quantum key distribution with entangled spin ½ particles simulation aims to help students understand the generation and distribution of a secure key and how the presence of an eavesdropper can be determined. The simulation shows a source of entangled particle pairs in the middle of two Stern-Gerlach apparatuses (SGAs). The SGAs can be oriented along two orthogonal axes manually or oriented randomly through the simulation. Students can allow an eavesdropper to intercept and resend particles. The measurement outcomes, key bits and the error rate are displayed. An accompanying activity for this simulation is available at http://quantumphysics.iop.org and at www.st-andrews.ac.uk/physics/quvis. The simulation can be downloaded from the QuVis website www.st-andrews.ac.uk/physics/quvis. This... Show More
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