Communicating a direction using spin states
arXiv:quant-ph/0106155
Abstract
The communication of directions using quantum states is a useful laboratory test for some basic facts of quantum information. For a system of spin-1/2 particles there are different quantum states that can encode directions. This information can later be decoded by means of a generalized measurement. In this talk we present the optimal strategies under different assumptions.
Contribution to the ICQI, Rochester (NY) June 2001