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Everything about Threshold theorem

Quantum error correction schemes can suppress the logical error rate arbitrarily low

In quantum computing, the threshold theorem states that a quantum computer with a physical error rate below a certain threshold can, through application of quantum error correction schemes, suppress the logical error rate to arbitrarily low levels. This shows that quantum computers can be made fault-tolerant, as an analogue to von Neumann's threshold theorem for classical computation. This result was proven independently by the groups of Dorit Aharonov and Michael Ben-Or; Emanuel Knill, Raymond Laflamme, and Wojciech Zurek; and Alexei Kitaev. These results built on a paper of Peter Shor, which proved a weaker version of the threshold theorem. Wikipedia →

đź§­ Start here: a 6-step reading path

  1. Read the overview: Threshold theoremA 5-minute orientation
  2. Skim a recent paper: Sharp threshold for the Erdős–Ko–Rado theoremInfluential work since 2022
  3. Pick up a classic book: Cartesian meditationsThe most-reprinted book on the subject
  4. Read the landmark paper: A Theorem on Photomeson Production near Threshold and the Suppression of Pairs in Pseudoscalar Meson TheoryCited 310 times
  5. Go sideways: Glossary of quantum computingA closely related topic
  6. Go sideways: Eastin–Knill theoremA closely related topic

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  1. Explanation
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