Open AccessHigh quality-factor Si/SiO_2-InP hybrid micropillar cavities with submicrometer diameter for 155-μm telecommunication band
Author(s) -
HaiZhi Song,
Kazuhiro Takemoto,
T. Miyazawa,
Motomu Takatsu,
Satoshi Iwamoto,
Mitsuru Ekawa,
Tsuyoshi Yamamoto,
Yasuhiko Arakawa
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.016264
Subject(s) - optics , materials science , q factor , optoelectronics , wavelength , physics , resonator
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.