> This page is from **SQOUT** by QuDef — https://sqout.qudef.com/
>
> SQOUT, by QuDef, is a security intelligence and knowledge framework for quantum technologies. Its catalogue describes attacks, vulnerabilities, countermeasures and security proofs for quantum communication and quantum computing systems.
>
> How to use and cite this content: https://sqout.qudef.com/llms.txt

# Unconditional security of quantum key distribution over arbitrarily long distances (Lo1999)

Source: https://sqout.qudef.com/literature/Lo1999
Cite as: SQOUT (QuDef), https://sqout.qudef.com/literature/Lo1999, Lo1999

- **UUID:** c04da108-e92d-4637-883f-8220abd65262