Does weak measurement cause mixed state?

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SUMMARY

A weak measurement on the spin of an electron in a pure state does not result in a mixed state but rather places the electron in a superposition of the previous state and the measurement axis state. This conclusion is drawn from the discussion on the nature of weak measurements, emphasizing that the electron retains its quantum coherence rather than collapsing into a mixed state. The concept of superposition is critical in understanding the implications of weak measurements in quantum mechanics.

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entropy1
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Does a 'weak measurement' on the spin of an electron in a pure state put the electron in a mixed state of the previous state and the state of the measurement axis of the measurement?
 
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entropy1 said:
Does a 'weak measurement' on the spin of an electron in a pure state put the electron in a mixed state of the previous state and the state of the measurement axis of the measurement?

I think it is in a superposition of those states, not a mix. After a suitable weak measurement, that is.
 

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