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Equation 7 · Part 1 · How Fast Can a Horizon Learn Which Path You Took?

Symbol h_1

∣h1⟩|h_1\rangle
h1h_1

What this part means

h1h_1 is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

h1h_1 is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

Assume for the moment that |h0h_0⟩\rangle and |h1h_1⟩\rangle are pure, normalized, and prepared with equal prior probability. Define their trace distinguishability

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Learn the underlying idea

A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

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Sources cited in the article section

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