Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4937807
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Funding
- European Research Council (ERC) [257531-EnSeNa]
- Canadian Institute for Advanced Research (CIFAR, Quantum Information Science Program)
- German Ministry of Education and Research (Center for Innovation Competence program) [03Z1HN31]
- German Research Foundation (DFG) [SZ276/7-1]
- Lise-Meitner-Fellowship of the Austrian Science Fund (FWF) [M 1849]
- Austrian Science Fund (FWF) [M 1849] Funding Source: researchfish
- Austrian Science Fund (FWF) [M1849] Funding Source: Austrian Science Fund (FWF)
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We measure the next-nearest-neighbour coupling in an array of coupled optical waveguides directly via an integrated eigenmode interferometer. In contrast to light propagation experiments, the technique is insensitive to nearest-neighbour dynamics. Our results show that second-order coupling in a linear configuration can be suppressed well below the level expected from the exponential decay of the guided modes. (C) 2015 AIP Publishing LLC.
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