Author Affiliations

T. Honjo,^1,8,* S. W. Nam,² H. Takesue,^1,8 Q. Zhang,³ H. Kamada,¹ Y. Nishida,⁴ O. Tadanaga,⁴ M. Asobe,⁴ B. Baek,² R. Hadfield,² S. Miki,⁵ M. Fujiwara,⁵ M. Sasaki,⁵ Z. Wang,⁵ K. Inoue,^1,6,8 and Y. Yamamoto^3,7

¹NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi 243-0198, Japan

²National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA

³E. L. Ginzton Laboratory, Stanford University, 450 Via Palou, Stanford, California 94305-4088, USA

⁴NTT Photonics Laboratories, NTT Corporation, Atsugi-shi 243-0198, Japan

⁵National Institute of Information and Communication Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan

⁶Osaka University, Suita, Osaka, 565-0871 Japan

⁷National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan

⁸CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, 332-0012, Japan

^*Corresponding author: honjo@will.brl.ntt.co.jp