Inter-core skew in multicore fibers is characterized to ±0.11 ps precision via Hong-Ou-Mandel interference in a 4x4 fiber beam splitter, validating random-walk scaling over lengths from 7.7 m to 1.3 km.
Experimental space-division multiplexed polarization-entanglement distribution through 12 paths of a multicore fiber,
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Sub-picosecond inter-core skew characterization in multicore fibers via Hong--Ou--Mandel interference
Inter-core skew in multicore fibers is characterized to ±0.11 ps precision via Hong-Ou-Mandel interference in a 4x4 fiber beam splitter, validating random-walk scaling over lengths from 7.7 m to 1.3 km.