Non locality, closing the detection loophole and communication complexity

Details Non locality, closing the detection loophole and communication complexity Non locality, closing the detection loophole and communication complexity

2001-09-03

arxiv.org/abs/quant-ph/0109008v3

Phys. Rev. A 65, 032121 (2002)

Physics

Quantum Physics

4 pages Latex, minor typos corrected

Scientific paper

10.1103/PhysRevA.65.032121

It is shown that the detection loophole which arises when trying to rule out local realistic theories as alternatives for quantum mechanics can be closed if the detection efficiency $\eta$ is larger than $\eta \geq d^{1/2} 2^{-0.0035d}$ where $d$ is the dimension of the entangled system. Furthermore it is argued that this exponential decrease of the detector efficiency required to close the detection loophole is almost optimal. This argument is based on a close connection that exists between closing the detection loophole and the amount of classical communication required to simulate quantum correlation when the detectors are perfect.

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