title: High quality-factor Si/SiO(2)-InP hybrid micropillar cavities with submicrometer diameter for 1.55-μm telecommunication band.
abstract: We theoretically demonstrate high quality(Q)-factor micropillar cavities at 1.55-μm wavelength based on Si/SiO(2)-InP hybrid structure. An adiabatic design in distributed Bragg reflectors (DBRs) improves Q-factor for upto 3 orders of magnitude, while reducing the diameter to sub-micrometer. A moderate Q-factor of ~3000 and a Purcell factor of ~200 are realized by only 2 taper segments and fewer conventional DBR pairs, enabling single photon generation at GHz rate. As the taper segment number is increased, Q-factor can be boosted to ~10(5)-10(6), enabling coherent exchange between the emitter and the optical mode at 1.55 μm, which is applicable in quantum information networks.
authors.forename: Hai-Zhi
authors.initials: HZ
authors.lastname: Song
authors.forename: Kazuya
authors.initials: K
authors.lastname: Takemoto
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Miyazawa
authors.forename: Motomu
authors.initials: M
authors.lastname: Takatsu
authors.forename: Satoshi
authors.initials: S
authors.lastname: Iwamoto
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Ekawa
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Arakawa