Welcome to the Quantum Jargon Decoder

Quantum computing, quantum information, and quantum cryptography are revolutionizing how we think about computation, communication, and security. But the field is drowning in jargon.

Qubits. Superposition. Entanglement. Decoherence. T1 times. Surface codes. NISQ. QKD.

If you’ve ever felt lost reading a quantum computing paper, tutorial, or press release, you’re not alone. This glossary exists to help you decode the quantum world.

Who is this for?

  • Newcomers taking their first steps into quantum computing
  • Software developers exploring quantum programming
  • Researchers from adjacent fields entering the quantum space
  • Students studying quantum information theory
  • Anyone who wants to refresh their memory on a specific term
  • Professionals trying to cut through the hype and understand what’s real

How to use this guide

Each term includes:

  • A one-liner summary for quick reference
  • A detailed explanation for deeper understanding
  • Cross-references to related concepts
  • Practical context on why the term matters

Start with the Introduction to Quantum Jargon if you’re completely new, or jump directly to any term that’s puzzling you.

A note on rigor

This is an informal glossary. We prioritize clarity and intuition over mathematical precision. When a concept requires deep mathematical treatment, we’ll point you to the right resources. The goal is to give you a working understanding, not to replace a textbook.

Contribute

Spot an error? Have a term to add? Think an explanation could be clearer? This is an open project and contributions are welcome. Every page has an “Edit” link that takes you directly to the source.


“The quantum world is strange, but the jargon doesn’t have to be.”

Time to decode it.