Single-photon non-reciprocity with an integrated magneto-optical isolator

• URL: http://arxiv.org/abs/2107.09516v1
• Date: Tue, 20 Jul 2021 14:05:42 GMT
• Title: Single-photon non-reciprocity with an integrated magneto-optical isolator
• Authors: Shang-Yu Ren, Wei Yan, Lan-Tian Feng, Yang Chen, Yun-Kun Wu, Xiao-Zhuo Qi, Xiao-JingLiu, Yu-Jie Cheng, Bo-Yu Xu, Long-Jiang Deng, Guang-Can Guo, Lei Bi, and Xi-Feng Ren
• Abstract summary: The quantum properties of an on-chip silicon nitride (SiN)-based magneto-optical (MO) isolator were studied. Our work will promote on-chip isolators within the integrated quantum circuits and help introduce novel phenomena in quantum information processes.
• Score: 8.954075776099748
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Non-reciprocal photonic devices are essential components of classical optical information processing. It is interesting and important to investigate their feasibility in the quantum world. In this work, the quantum properties of an on-chip silicon nitride (SiN)-based magneto-optical (MO) isolator were studied using a single-photon non-reciprocal dynamical transmission experiment. The measured isolation ratio for single photons achieved was 12.33 dB, which proved the functionality of our on-chip isolator. The quantum coherence of the passing single photons was further verified using high-visibility quantum interference. Our work will promote on-chip isolators within the integrated quantum circuits and help introduce novel phenomena in quantum information processes.

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