Material Detail

The Superposition states and mixed states simulation allows students to use a Stern-Gerlach apparatus that can be oriented along two orthogonal axes to investigate whether they can experimentally distinguish mixed states from superposition states. Students can choose between different input spin states, which include a superposition state and a corresponding mixed state and two unknown input states labelled with question marks. The simulation shows the individual spin measurement outcomes and the measurement outcome probabilities mathematically and graphically. An accompanying activity for this simulation is available at http://quantumphysics.iop.org and www.st-andrews.ac.uk/physics/quvis. The simulation can be downloaded from the QuVis website www.st-andrews.ac.uk/physics/quvis.

This simulation is part of the UK Institute of Physics New Quantum Curriculum, see http://quantumphysics.iop.org. Simulations and accompanying activities can be accessed from the IOP site and from www.st-andrews.ac.uk/physics/quvis. Sharing of these resources is encouraged, with all usage under the Creative Commons CC BY-NC-ND licence. Instructors can email quantumphysics@iop.org for activity solutions and to request to modify materials.

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