# Bell State Probability

Classical Mechanics Level 3

In the product of spin states $$\frac{1}{\sqrt{2}} (|\uparrow\rangle\otimes|\uparrow\rangle + |\uparrow\rangle\otimes|\downarrow\rangle )$$, what is the probability that a Bell measurement will find the Bell state $$|\Phi_1\rangle$$?

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