Editing Quantum Error Correction (section)

== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Quantum Error Correction (QEC)''' — The process of protecting quantum information from noise and decoherence.
* '''Logical Qubit''' — A "Virtual" qubit that is stable and error-free, made up of many physical qubits.
* '''Physical Qubit''' — A single, real-world quantum device (like one ion or one superconducting loop) that is prone to errors.
* '''Decoherence''' — The "Leaking" of quantum information into the environment, causing a qubit to lose its superposition.
* '''Bit-Flip Error''' — When a |0⟩ accidentally becomes a |1⟩ (similar to a classical error).
* '''Phase-Flip Error''' — A unique quantum error where the "Sign" of the superposition changes, which can ruin a calculation.
* '''Surface Code''' — A specific arrangement of qubits on a 2D grid used to detect and fix errors.
* '''Syndrome Measurement''' — A technique for "Looking at the neighbors" of a qubit to see if an error happened without looking at the qubit itself.
* '''Fault Tolerance''' — A system designed so that it can continue to work correctly even if some of its parts fail.
* '''Overhead''' — The "Cost" of error correction (e.g., needing 1,000 physical qubits to make 1 good logical qubit).
</div>

<div style="background-color: #006400; color: #FFFFFF; padding: 20px; border-radius: 8px; margin-bottom: 15px;">