3.8 Proceedings Paper

Total angular momentum sorting with a silicon metasurface-based spiral transformation scheme

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IEEE

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Funding

  1. National Key R&D Program of China [2018YFB1801803]
  2. National Natural Science Foundation of China (NSFC) [61490715, U1701661, 11774437]
  3. Science and Technology Program of Guangzhou [201804010302]
  4. Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01X121]

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As joint multiplexing/encoding of orbital angular momentum (OAM) and spin angular momentum (SAM) states in theory can further enhance the functionality and capacity of optical information systems, it is desirable and critical to achieve total angular momentum sorting of light. In this work, a silicon metasurface-based spiral transformation scheme is proposed and demonstrated to achieve this goal, which can be theoretically lossless and low-crosstalk. Therefore, it could be useful in both classical and quantum information systems exploiting the framework of high-dimensional OAM-SAM multiplexing. (C) 2019

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