Logical Qubit Performance
In the quest to build scalable and fault-tolerant quantum computers, logical qubits are central. Unlike physical qubits, which are the raw, error-prone building blocks of quantum processors, logical qubits are….
Tag: surface code
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….
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….
Quantum Error Correction
1. Why Do We Even Need Error Correction in Quantum Computing? In classical computing: In quantum computing: But unlike classical bits, you can’t just copy a qubit or measure it….