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We report 50-milli-Hertz-linewidth optomechanical oscillation of a silica microsphere immersed in a buffer solution. Using the microsphere as a nanosensor, single 10-nm-radius silica beads and Bovine serum albumin (BSA) protein molecules were detected.
We demonstrate photonic-crystal nanobeam cavities in amorphous SiC. The fundamental mode exhibits intrinsic-Q of 7.69×104 with mode volume of 0.60(λ/n)3. This is, to the best of our knowledge, the highest Q/V value in SiC cavities.
We demonstrate a convenient approach for precise dispersion engineering of silicon microdisk resonators via thermal oxidation. This technique potentially enables efficient correlated photon-pair generation for quantum photonics.
We report the first demonstration of high-quality (Qi ∼ 2.8−3.2×103)3C silicon carbide photonic crystal nanobeams. With the strong optomechanical coupling (gOM/2π ∼ 100 GHz/nm), we observed clear optical transduction of the thermal mechanical motion of the coupled nanobeams.
We observed optomechanical oscillations at 384-kHz by immersing a silica microsphere in an aqueous environment. Despite of high dissipation, the device displays a laser threshold power of 0.98-mW and a mechanical Q of 1,648.
We demonstrate compact silicon microring resonators suspended in air with ultra-high optical quality, achieving an intrinsic quality factor of 9.2×105 in the telecom band for the resonator with a radius of 9 µm.
We demonstrate an on-chip single photon source that produces ultra-bright high-purity photon pairs in a comb fashion, achieving a spectral brightness of 6.24×107 pair/s/mW2/GHz which is the highest performance reported up to date.
We report position-squared coupling six orders of magnitude larger than previously demonstrated, allowing measurement of as few as 652 phonons and presenting a practical route toward probing of single-phonon jumps and characterization of phonon statistics.
The coupling of mechanical oscillators and optical cavity modes through scattering forces has received considerable attention in recent years. This interaction provides a way, through the principle of dynamic back action, to amplify and cool mechanical motion . It could also soon provide a practical means to entangle macroscopic mechanical motion with a variety of other quantum systems, including...
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