While your request for a "piece on Quantum Computation and Quantum Information: 10..." could refer to a few different things, it most likely refers to of the seminal textbook Quantum Computation and Quantum Information by Michael Nielsen and Isaac Chuang, which is titled "Quantum Error-Correction" .
If you were referring to the specifically: Quantum Computation and Quantum Information: 10...
A class of codes (named after Calderbank, Shor, and Steane) that use classical linear codes for quantum purposes. While your request for a "piece on Quantum
A powerful mathematical framework used to describe and analyze a wide variety of quantum codes. The 10th Anniversary Edition ( Mike & Ike ) The 10th Anniversary Edition ( Mike & Ike
A more advanced 9-qubit code that can correct both bit-flips and phase-flips.
Quantum states are extremely fragile. Interactions with the environment cause decoherence , which leads to errors in computation.
A basic example used to correct "bit-flip" errors.