Linearity and loopholes: On Bell inequalities and measurement-based quantum computation

Event: 
IICQI 2010
Speaker(s): 
Talk type: 
Invited
Abstract: 

We show [1] that multi-party generalisations of the CHSH inequality can be elegantly derived in a framework similar to measurement-based quantum computation. This gives an operational meaning of what it means to violate a CHSH-type inequality, which allows us to characterise the effect of "loopholes" in Bell inequality experiments. We show that adaptive measurements of the kind which occur in measurement-based quantum computation may be simulated without introducing a loophole, and that this means that one can contrast local hidden variable correlations with a wider class of quantum correlations than traditionally considered.

[1] M. Hoban and D.E. Browne, in preparation

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