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Certainty relations between local and nonlocal observables

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arxiv quant-ph/0508145 v1 pith:55L7QWCE submitted 2005-08-19 quant-ph

Certainty relations between local and nonlocal observables

classification quant-ph
keywords localrelationsaccuratearbitrarycomplementaritydefinedjointnonlocal
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We demonstrate that for an arbitrary number of identical particles, each defined on a Hilbert-space of arbitrary dimension, there exists a whole ladder of relations of complementarity between local, and every conceivable kind of joint (or nonlocal) measurements. E.g., the more accurate we can know (by a measurement) some joint property of three qubits (projecting the state onto a tripartite entangled state), the less accurate some other property, local to the three qubits, become. We also show that the corresponding complementarity relations are particularly tight for particles defined on prime dimensional Hilbert spaces.

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