: A major class of codes (e.g., the [[4, 2, 2]] or [[8, 3, 2]] codes) that use "syndrome measurements" to detect and localize errors without destroying the underlying quantum information.

: The basic unit of quantum information. Unlike classical bits (

Quantum codes primarily refer to , which are essential for protecting quantum information from noise and decoherence. This guide covers the fundamental concepts, popular coding frameworks, and steps to begin programming quantum machines. 1. Core Concepts of Quantum Information

: A phenomenon where qubits become linked; the state of one instantly affects another, regardless of distance. This is crucial for error correction.

: Operations (like the Hadamard or CNOT gates) that manipulate qubit states to perform computations, forming Quantum Circuits . 2. Quantum Error-Correcting Codes (QECCs)

), a qubit can exist in a of both states simultaneously.