Quantum Error Correction

Quantum Computing

A computing paradigm that uses quantum mechanical phenomena like superposition and entanglement to process information exponentially faster for certain problems.

Qubit

The fundamental unit of quantum information, capable of existing in a superposition of both 0 and 1 states simultaneously.

Superposition

A quantum mechanical property where a qubit exists in multiple states simultaneously until measured.

Quantum Entanglement

A phenomenon where two or more qubits become correlated such that the quantum state of one instantly influences the other regardless of distance.

Quantum Gate

A basic quantum circuit operation that manipulates one or more qubits, analogous to logic gates in classical computing.

Quantum Circuit

A sequence of quantum gates applied to qubits to perform a quantum computation.

Decoherence

The loss of quantum coherence when a quantum system interacts with its environment, causing errors in computation.

Quantum Noise

Random fluctuations in quantum systems that introduce errors and limit the accuracy of quantum computations.

NISQ

Noisy Intermediate-Scale Quantum — the current era of quantum computing with limited, error-prone qubits.

Fault-Tolerant Quantum Computing

Quantum computing systems that can continue to operate correctly even in the presence of errors.

Quantum Teleportation

The transfer of quantum states between qubits using entanglement and classical communication.

Photonic Quantum Computing

Quantum computing using photons as qubits, manipulated through optical components.

The ability of quantum computers to evaluate multiple computational paths simultaneously through superposition.

An algorithm designed to run on a quantum computer, potentially solving certain problems faster than classical algorithms.

A quantum search algorithm that provides quadratic speedup for searching unsorted databases.

A collection of qubits that together store quantum information for processing in a quantum circuit.

A quantum computing approach that uses the complex dynamics of quantum systems as a computational resource.

Google's open-source framework for writing, manipulating, and running quantum circuits on quantum hardware and simulators.

A qubit design that encodes information in the topological properties of matter, offering inherent error protection.

Cryptographic algorithms designed to be secure against both classical and quantum computer attacks.