P. Oscar Boykin, Vwani P. Roychowdhury
Published 2004-12-03Version 1
We show that for Eve to get information in one basis about a state, she must cause errors in all bases that are mutually unbiased to that basis. Our result holds in any dimension. We also show that this result holds for all functions of messages that are encrypted with a key.
Comments: 18 pages, 1 figure
Disturbance: It's a Feature, not a Bug
Information and disturbance in operational probabilistic theories
Disturbance due to Measurements on a Chaotic System
