Glossary

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There are currently 5 terms in this directory beginning with the letter Q.
Quad Small Form Factor Pluggable
The "big brother" of the SFP module format, with four lanes that allow for speeds four times higher than the corresponding SFP.
QSFP

Quantum Computer
A device that uses the properties of quantum mechanics (superposition, interference, entanglement) to perform calculations. In theory, these computers can solve certain computational problems (such as the factorization behind encryption) much faster than classical computers.

Quantum Key Distribution
A secure communication method that implements properties of quantum mechanics. These properties allow two communicating users to easily detect the presence of an eavesdropper.

Quantum Safe Encryption
Also called post-quantum or quantum-resistant encryption. Encryption algorithms that are thought to be secure against an attack by quantum computer.

Qubit
The quantum version of a classical information bit. While a normal bit can be just 0 or 1, a qubit can have a combination of 0 or 1 states.