Communicating a direction using spin states

Details Communicating a direction using spin states Communicating a direction using spin states

2001-06-27

arxiv.org/abs/quant-ph/0106155v1

Physics

Quantum Physics

Contribution to the ICQI, Rochester (NY) June 2001

Scientific paper

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.

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