Synthetic-lattice enabled all-optical devices based on orbital angular momentum of light

Xi-Wang Luo, Xingxiang Zhou (), Jin-Shi Xu, Chuan-Feng Li, Guang-Can Guo, Chuanwei Zhang and Zheng-Wei Zhou ()
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Xi-Wang Luo: Key Laboratory of Quantum Information, University of Science and Technology of China
Xingxiang Zhou: Key Laboratory of Quantum Information, University of Science and Technology of China
Jin-Shi Xu: Key Laboratory of Quantum Information, University of Science and Technology of China
Chuan-Feng Li: Key Laboratory of Quantum Information, University of Science and Technology of China
Guang-Can Guo: Key Laboratory of Quantum Information, University of Science and Technology of China
Chuanwei Zhang: The University of Texas at Dallas
Zheng-Wei Zhou: Key Laboratory of Quantum Information, University of Science and Technology of China

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract All-optical photonic devices are crucial for many important photonic technologies and applications, ranging from optical communication to quantum information processing. Conventional design of all-optical devices is based on photon propagation and interference in real space, which may rely on large numbers of optical elements, and the requirement of precise control makes this approach challenging. Here we propose an unconventional route for engineering all-optical devices using the photon’s internal degrees of freedom, which form photonic crystals in such synthetic dimensions for photon propagation and interference. We demonstrate this design concept by showing how important optical devices such as quantum memory and optical filters can be realized using synthetic orbital angular momentum (OAM) lattices in degenerate cavities. The design route utilizing synthetic photonic lattices may significantly reduce the requirement for numerous optical elements and their fine tuning in conventional design, paving the way for realistic all-optical photonic devices with novel functionalities.

Date: 2017
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DOI: 10.1038/ncomms16097

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