Equation 95 · The Atlas That Refuses to Close

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y

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the postselect along. Read the equation part by part below; each part has a contextual explanation and a link to its mathematical background.

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y

Symbol y

the postselect along.

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1 ( ∣ ↑ ⟩ + ∣ ↓ ⟩) , and postselect along y , |f $\rangle$ = $\tfrac{1}{\sqrt2}(|{\uparrow}\rangle+i|{\downarrow}\rangle)$ . Then $\langle$ f| $\psi$ $\rangle$ = $\tfrac12(1-i)$ and $\langle$ f| $\sigma_z$ | $\psi$ $\rangle$ = $\tfrac12(1+i)$ , so the weak value of $\sigma_z$ is

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[11] How the Result of a Measurement of a Component of the Spin of a Spin-1/2 Particle Can Turn Out to Be 100 ↗

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