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1 correction found
QEC was then invented (toric code by Kitaev)
This gets the history wrong: quantum error correction predates Kitaev’s toric code. QEC was already introduced in 1995–1996; the toric code is a later 1997 QEC code, not the invention of QEC itself.
Full reasoning
The claim conflates the invention of quantum error correction (QEC) with one later QEC construction, the toric code.
Here is the chronology from primary/official sources:
- QEC already existed by 1995. Peter Shor and A. R. Calderbank's paper “Good Quantum Error-Correcting Codes Exist” was submitted on December 30, 1995. The arXiv abstract explicitly defines a quantum error-correcting code, showing the field was already established before 1997.
- Kitaev’s toric code came later, in 1997. IBM Quantum’s documentation states that “the toric code … was discovered by Alexei Kitaev in 1997.”
So the toric code is an important example/family of QEC codes, but it is not when QEC was invented. Saying “QEC was then invented (toric code by Kitaev)” reverses that history by roughly two years.
2 sources
- [quant-ph/9512032] Good Quantum Error-Correcting Codes Exist
Submitted on 30 Dec 1995 ... Title: Good Quantum Error-Correcting Codes Exist ... Abstract: A quantum error-correcting code is defined to be a unitary mapping...
- Toric code | IBM Quantum Documentation
Next we'll discuss a specific CSS code known as the toric code, which was discovered by Alexei Kitaev in 1997.