← Open problems
MUB-10.14
For a quantum particle with one degree of freedom, do more than three MU bases with basis-independent overlaps exist?
Our position — ours alone, not the authors'
Continuous variables. Infinite-dimensional; nothing we own applies.
Source
Daniel McNulty, Stefan Weigert, Mutually Unbiased Bases in Composite Dimensions -- A Review
Quantum 10, 2051 (2026) · §10.3
https://doi.org/10.22331/q-2026-04-01-2051
Licence:
CC-BY-4.0
— the problem statement is quoted here under that
licence, with attribution, and has not been modified