The curricular material uses the OSP Spins program to show the effect of measurement on an ensemble of spin-1/2 particles. In the virtual experiment, a beam of spin-1/2 particles leaves an oven incident on one or multiple ideal analyzers (ideal Stern-Gerlach apparatus) the result of which is detected as a click on a detector.
Before performing these virtual experiments it is important to first look over the tutorial and the tutorial exercises.
NOTE: In these exercises a beam of spin-1/2 particles leaves an oven incident on an unknown ideal Stern-Gerlach apparatus. The incident beam is initially a statistical or random mixture of spin-1/2 particles. To determine the polarization of the unknown analyzer (x, y, z, or some other direction), you must change the initial beam to a superposition of spin states in either the x, y, or z bases and perform the experiment.
To do so click the Edit button:
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You will then see the following dialog:
Choose a basis and then in the row with the Spin 1/2 system reference, enter the real and imaginary coefficients of the spin up (Real 1 and Imag 1) and spin down (Real 2 and Imag 2) components of the initial beam. You must hit return on your keyboard to have your value entered in the text field. When you are ready to experiment click the Submit button on the dialog box.
Navigate to the files within this directory to access the exercises and the simulations.