High quality-factor Si/SiO(2)-InP hybrid micropillar cavities with submicrometer diameter for 1.55-µm telecommunication band.
Opt Express
; 23(12): 16264-72, 2015 Jun 15.
Article
em En
| MEDLINE
| ID: mdl-26193599
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.
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MEDLINE
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En
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2015
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Article