Maximal incompatibility conjecture for random balanced dichotomic PVMs

About 1 year old · traced to

Let g≥2g\geq 2. For each dd, let P1,…,PgP_1,\ldots,P_g be gg independent Haar-random projections of rank d/2d/2 on Cd\mathbb C^d, and let A1,…,AgA_1,\ldots,A_g be their associated dichotomic observables. The maximal incompatibility conjecture states that, in probability,

lim⁡d→∞τ(A1,…,Ag)=1g.\lim_{d\to\infty}\tau(A_1,\ldots,A_g)=\frac{1}{\sqrt{g}}.

This would show that independent Haar-random balanced dichotomic PVMs are asymptotically close to maximally incompatible for every g≥2g\geq 2, matching the known lower bound and the upper-bound analysis up to the conjectured exact value.

References

Primary source

Andreas Bluhm, Cécilia Lancien and Ion Nechita, “Random measurements are almost maximally incompatible”, arXiv:2507.20600 (2025).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.