Logical Qubits
A logical qubit is a virtual qubit created by using several physical qubits to protect and preserve quantum information. Logical qubits are the error-protected version of quantum bits and are….
Category: Quantum Computing
Fault-Tolerant Quantum Gates
Fault-tolerant quantum gates are quantum operations that are designed to work correctly even when some parts of the system experience small errors. In simpler terms: They are the “error-proof” buttons….
Syndrome Measurement
Syndrome measurement is the process of detecting which error (if any) has affected a quantum state—without destroying the quantum information itself. In simple terms: Syndrome measurement is like a quantum….
Threshold Theorem
The Threshold Theorem is a fundamental principle in quantum computing that says: If we can make the error rate of our quantum operations low enough — below a certain threshold….
Magic State Distillation
Magic State Distillation is a method used in fault-tolerant quantum computing to create special quantum states — called magic states — that allow us to perform quantum gates that are….
Topological Codes
Topological codes are a class of quantum error-correcting codes that store and protect quantum information using geometric properties of surfaces, rather than relying on nested codes or repeated measurements. They’re….
Concatenated Codes
Concatenated codes are a technique used in quantum error correction (QEC) to amplify protection against errors by combining two or more error correction codes in a nested way — like….
Surface Codes
Surface codes are one of the most promising methods for quantum error correction (QEC). In simple terms, they are used to protect quantum information from errors — which is essential….
Quantum Memory Technologies
Quantum memory is a device or system that stores quantum information — typically in the form of qubits — for a period of time, just like classical memory stores bits…..
Quantum Sensors
Quantum sensors are devices that use the unique properties of quantum mechanics—like superposition, entanglement, and quantum tunneling—to measure physical quantities with extremely high precision. These sensors can detect tiny changes….