Quantum correlations are critical to our understanding of nature, with far-reaching technological [1][2][3][4] and fundamental impact. These often manifest as violations of Bell's inequalities [5][6][7][8], bounds derived from the assumptions of locality and realism, concepts integral to classical physics. Many tests of Bell's inequalities have studied pairs of correlated particles; however, the immense interest in multi-particle quantum correlations is driving the experimental frontier to test systems beyond just pairs. All experimental violations of Bell's inequalities to date require supplementary assumptions, opening the results to one or more loopholes, the closing of which is one of the most important challenges in quantum science. Individual loopholes have been closed in experiments with pairs of particles [9][10][11][12][13][14] and a very recent result closed the detection loophole in a six ion experiment [15]. No experiment thus far has closed the locality loopholes with three or more particles. Here, we distribute three-photon Greenberger-Horne-Zeilinger entangled states[16] using optical fibre and free-space links to independent measurement stations. The measured correlations constitute a test of Mermin's inequality [17] while closing both the locality and related freedom-of-choice loopholes due to our experimental configuration and timing. We measured a Mermin parameter of 2.77 ± 0.08, violating the inequality bound of 2 by over 9 standard deviations, with minimum tolerances for the locality and freedom-of-choice loopholes of 264 ± 28 ns and 304 ± 25 ns, respectively. These results represent a significant advance towards definitive tests of the foundations of quantum mechanics[18] and practical multi-party quantum communications protocols [19].In his breakthrough work, John Bell[5] derived upper bounds on the strength of correlations exhibited by local hidden variable (LHV) theories, very general models of nature in which measurement outcomes in one region of space are independent of the events in other space-like separated regions. Quantum mechanical correlations can violate these bounds. Greenberger, Horne, and Zeilinger (GHZ) extended Bell's argument to the scenario with three-particle entangled states, and showed they could manifest violations of local realism in a fundamentally different way [16,20]. The GHZ argument was converted into the form of an inequality by Mermin[17] which we experimentally tested.An ideal Bell inequality experiment requires separating two or more particles by a large distance and making highefficiency local measurements on those particles using randomly chosen settings and comparing these results [21,22]. The first Bell inequality tests were carried out using twophoton cascades in atomic systems [7,8]. Mermin's inequality was violated using three-photon entanglement from a parametric down-conversion source [23]. However, these and the many other Bell experiments that followed are subject to one or more loopholes that could, in principle, be exploited to yield a violat...

This article demonstrates and discusses a model to help instructors select appropriate designs from learning design repositories for courses they are developing. We describe the LearningMapR: A prototype pedagogical design tool being developed as a first step toward an IMS-LD-compliant authoring system. This tool's output is a Unit of Learning [UOL] containing storyboards, placeholders for content, and IMS-LD compliant templates and exemplars that are chosen from an illustrative set developed for the project. Based on collaborative work with the University of Oxford and using tools such as Reload as the base, we intend to create a 'teacher-friendly' tool for instructors to create UOLs.

In 1991 SGS‐THOMSON introduced partnerships with key suppliers. Describes how the partnership excellence programmes (PEP) developed. Shows how emphasis on employee empowerment and building trust relationships has resulted in continuous improvements within the supply chain.