Mutually unbiased bases and finite projective planes
Rosu Barbus, Haret-Codratian
"It is conjectured that the question of the existence of a set of d+1 mutually unbiased bases in a d-dimensional Hilbert space if d differs from a power of a prime number is intimately linked with the problem of whether there exist projective planes whose order d is not a power of a prime number."
KeywordsMutually unbiased bases
Finite projective planes