Superposition of States

  • Thread starter daveyman
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  • #1
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I think this is a basic question:

If a state is in a superposition of energy eigen states of the harmonic oscillator, what will a single measurement yield?

Will it be <H>?
 

Answers and Replies

  • #2
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A measurement of what? I guess you mean an energy measurement. A single measurement would yield one of possible energy eigenvalues. The probability of a single measurement yielding a particular energy eigenvalue is equal to the modulus squared of the coefficient of expansion for that particular eigenstate in the superposition state.
 
  • #3
80
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Ie. Not the expectation value of the energy.
 

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