arXiv (All)
open access
Why three? A two-level system with four mutually unbiased questions
Two sharp yes/no questions are mutually unbiased if and only if their involutions anticommute. A set of unbiased questions is therefore a Clifford algebra, whose maximal size is odd, meaning four anticommuting questions typically imply a fifth: the two-level systems of real, complex and quaternionic
Conceptio Open Archive
Analyze & explore related research in Conceptio
Connect this record directly into your research workflow or AI agent. Explore citations across open repositories, query full text, and export structured proof bundles.
This document is indexed with metadata only: full text is not available in the archive for this record. Open the official source ↗
Related documents
- Equivalence of mutually unbiased bases via orbits: general theory and a $d=4$ case study#924447
- Equivalence of mutually unbiased bases via orbits: general theory and a $d=4$ case study#920216
- Direct Cultivation of Entangled $|CS\rangle$ Magic States#999901
- Moral skepticism#114254
- 4 Not at all#961792
Record · ID 996994
Retrieved via Conceptio: every document is proof-bundled with source, license, and retrieval metadata.
Retrieved via Conceptio: every document is proof-bundled with source, license, and retrieval metadata.
Bring this data into your agent: Connect via MCP or API · 20 free credits to start · no card required
Read the Docs → · View CLI source on GitHub · Conceptio Open Knowledge Archive
Read the Docs → · View CLI source on GitHub · Conceptio Open Knowledge Archive