Author Affiliations

Xuejun Xu,^1,* Masaya Hiraishi,^1,2 Tomohiro Inaba,¹ Tai Tsuchizawa,³ Atsushi Ishizawa,¹ Haruki Sanada,¹ Takehiko Tawara,⁴ Jevon Longdell,² Katsuya Oguri,¹ and Hideki Gotoh¹

¹NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan

²The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics, University of Otago, 730 Cumberland Street, Dunedin 9016, New Zealand

³NTT Device Technology Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan

⁴Department of Electrical and Electronic Engineering, College of Engineering, Nihon University, 1Aza-Nakagawara, Tokusada, Tamuramachi, Koriyama-shi, Fukushima 963-8642, Japan

^*Corresponding author: xuejun.xu.xe@hco.ntt.co.jp