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Single photons are efficiently collected based on a tunable microfiber-coupled photonic crystal cavity with an embedded InAs quantum dot. 25% of total fiber collection efficiency is obtained. Tunability of the cavity and Purcell-enhanced spontaneous emission rate are also observed.
We propose seamless integration of a tightly focused sub-5-nm-gap plasmonic crystal cavity with a plasmonic waveguide. A three-dimensionally tapered 2-nm-gap plasmonic crystal cavity exhibiting a mode volume of 6 × 10−6 (λ/n)3 can efficiently couple to an integrated waveguide with over 90% efficiency by optimally selecting the number of air-holes in the plasmonic crystal. Along with the theoretical...
We demonstrate in-situ monolithic integration of an InP-based nanobeam laser and a passive waveguide on SOI using selective quantum well etching technique. The device on SOI platform is realized by employing transfer printing process.
We suggest cladding and geometric engineering methods for effective field engineering of sub-wavelength-scale plasmonic cavities, which enable 90% coupling to the integrated waveguide and extreme 3D field confinement in a volume of ∼10−7 λ3 (−5×10×10 nm3).
Efficient single photon collection is demonstrated based on a μ-fiber-coupled photonic crystal cavity. 249 kHz of single photons are detected, and estimated single photon count rate(overall collection efficiency) is 20 MHz(25 %).
An optical tapered microfiber is used to collect photoluminescence of semiconductor quantum dots in photonic crystals at cryogenic temperature (∼8K). Curved-microfiber coupled system dramatically enhances collection efficiency by several times.
We propose and demonstrate reconfigurable photonic crystal (PhC) resonators. In this generic configuration, the position and size of a PhC resonator can be defined (and redefined) repeatedly as simply relocating a curved microfiber along the linear PhC waveguide. In the proximity of the PhC waveguide in contact with the microfiber, the cutoff frequency (effective index) of the PhC waveguide becomes...
All-optical switching is demonstrated in a photonic crystal resonator evanescently coupled with a micro-fiber. Carrier-induced fast blueshift of resonant wavelength by 1.5 nm is observed at 980 nm pump energy of ~300 fJ.
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