Question: {e} Explain in one sentence what a projection operator is in quantum mechanics. Obtain the respective projection operators for the possible measurement outcomes you would

quantum mechanics. Obtain the respective projection operators for the possible measurement outcomes

{e} Explain in one sentence what a projection operator is in quantum mechanics. Obtain the respective projection operators for the possible measurement outcomes you would obtain for a measurement of oz. [3 marks] (g) Explain in one sentence what the expectation value means as a concept in quantum mechanics. Calculate the expectation value for 02 for the state I x). [2 marks]

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