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A Tale of Two Qubits: How Quantum Computers Work

arstechnica.com

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Re: A Tale of Two Qubits: How Quantum Computers Work

#2
"If the phonebook has 10,000 entries, on average you'll need to look through about half of them—5,000 entries—before you get lucky."

How could one possibly search a phone book so poorly? Even a dumb binary search would eliminate about half the remaining entries each time, getting the job done after only checking around 15 entries.