[18a-S2_202-1~9] KS.2 Quantum Information Engineering Group

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)

[18a-S2_202-1] [The 59th Young Scientist Presentation Award Speech] Microwave–Optical Interface via Electromechanical Coupling of a SnV Center in Diamond

〇Yuhei Sekiguchi^1,2, Abdul Nasir^1,2, Hodaka Kurokawa^1,2, Mikiya Kamata^1,3, Shoji Hachuda^1,3, Masaki Kunii^1,3, Takemasa Tamanuki^1,2,3, Satomi Ishida⁴, Hidetsugu Matsukiyo⁵, Natthajuks Pholsen⁵, Masao Nishioka⁵, Sangmin Ji⁵, Hideo Otsuki⁴, Kosuke Kimura⁶, Kouta Takenaka⁶, Shinobu Onoda^2,6, Toshihiko Baba^1,2,3, Satoshi Iwamoto^2,4,5, Hideo Kosaka^1,2,3 (1.IAS Yokohama Natl. Univ., 2.QIC Yokohama Natl. Univ., 3.Grad. Sch. Eng. Yokohama Natl. Univ., 4.RCAST Tokyo Univ., 5.IIS Tokyo Univ., 6.QST)

Keywords:

diamond,quantum transducer,photonic crystal

Interfacing microwave-frequency quantum devices with optical systems requires a low-noise quantum transducer capable of suppressing thermal noise. Diamond color centers have been proposed as a promising platform for such interfaces. In this work, we demonstrate electrostatic excitation of a mechanical mode without employing piezoelectric materials. Using a single SnV center embedded in a diamond nanophotonic structure integrated on a SiN waveguide, we observe optical sidebands corresponding to a mechanical resonance at approximately 1.8 GHz. Furthermore, we observe interference dependent on the relative phase between the microwave and optical fields, indicating coherent coupling mediated by the color center via the mechanical mode.