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High-fidelity spatial mode transmission through a 1-km-long multimode fiber via vectorial time reversal
[article]
2020
arXiv
pre-print
The large number of spatial modes supported by multimode fiber (MMF) is a promising platform for boosting the secure key rate of quantum key distribution (QKD) by orders of magnitude. However, the practical use of multimode fibers in QKD is severely hampered by modal crosstalk and polarization mixing. Here we show that high mode fidelity can be achieved for a large number of spatial modes propagating through a 1-km-long, standard, graded-index, multimode fiber by using vectorial time reversal.
arXiv:2003.09883v2
fatcat:osxnj4eobvhn5kyoe45uraobxu