Quantifying the resource of sharing a reference frame

Details Quantifying the resource of sharing a reference frame Quantifying the resource of sharing a reference frame

2004-10-11

arxiv.org/abs/quant-ph/0410083v3

Phys. Rev. A 71, 032339 (2005)

Physics

Quantum Physics

Updated title as PRA did not accept the word "refbit" in the title: PRA accepts neither neologisms (="a meaningless word coine

Scientific paper

10.1103/PhysRevA.71.032339

We define a new quantity called refbit, which allows one to quantify the resource of sharing a reference frame in quantum communication protocols. By considering both asymptotic and nonasymptotic protocols we find relations between refbits and other communication resources. We also consider the same resources in encoded, reference-frame independent, form. This allows one to rephrase and unify previous work on phase references, reference frames, and superselection rules.

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