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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 propose coupled-cavity resonators for four-wave mixing (FWM) that support strong nonlinear interaction between distributed pump, signal and idler modes, yet allow independent coupling of these modes to separate ports. We demonstrate seeded FWM and discuss applications of such orthogonal coupling.
We report high angular tolerant transmission visible spectrum filters exploiting strong resonance behaviors in an ultrathin semiconductor layer between two metals. The angle robust property remains over a wide incident angular range up to ±70°.
A tunable interior-ridge microring filter is demonstrated with a high quality factor of 1.5×105, while achieving a thermal tuning efficiency of 5.5µW/GHz. The filter demonstrates a record low insertion-loss <0.05dB over an uncorrupted 4-THz free-spectral-range.
We demonstrate power-dependent buffering capacity of silicon nitride microring-resonator-based microparticle buffers on an optofluidic chip. We observe power-dependent buffering capacity of 7 to 21 particles for 2.2µm polystyrene microparticles, and buffering capacity of 14 red-blood-cells.
Inverted-wedge silica resonators with Q ≥ 106 were fabricated using conventional semiconductor processing. Robust wide-range control of coupling was demonstrated by horizontally moving a fiber taper on the top surface of the resonator.
We present a highly efficient narrow-band pair-photon source based on a crystalline whispering gallery mode resonator, which emits photons in exactly one spatiotemporal mode.
We present an experimental observation of topological structure in 1D photonic discrete-time quantum walks. We probe the full topological landscape demonstrating emergence of localized bound states, and existence of extremely (de)localized non-Gaussian quantum states.
We present an actively tunable mid-infrared metamaterial operating in the strong light-matter coupling regime. We can tune the upper polariton branch continuously over 8% of the center frequency by applying 5 V.
We demonstrate a new class of metamaterials with dielectric meta-atoms coupled to the incident waves by nonresonant metallic antennas. The storage of energy in the dielectric enables high-quality resonances in negative-permittivity and negative-permeability sheet metamaterials.
An injection-seeded, WGM resonator-based amplifier has been demonstrated. Synergy between the gain medium, WGM spectrum, and the Raman modes of the amplifier constituents is fundamental. The estimated optical gain is ∼ 30 dB.
Standard nonlinear optical materials exhibit negligible nonlinearity at the level of individual photons. We discuss two methods to generate strong photon-photon interactions using either atom-cavity coupling, or strong interactions between atoms in Rydberg states. In particular, we have demonstrated an all-optical transistor gated by one stored photon, and a bound state of two photons.
We show an electric control of metamaterial-induced transparency through active tuning of the dark mode. By hybridizing gated graphene with diatomic metamaterials, the transparency window switching is obtained at a frequency of 0.85 THz.
This tutorial provides an introduction to the current state-of-the-art, the challenges and the prospects of achieving quantum optical control over nano-, micro- and macro-mechanical devices, i.e. quantum optomechanics.
We demonstrate orthogonally polarized photon pair generation via spontaneous non-degenerate four-wave-mixing (FWM) of orthogonally polarized pumps in a CMOS compatible micro-ring resonator by fully suppressing stimulated FWM. Photon coincidences and optical parametric oscillation are measured.
Microcavity lasers possess mechanical resonances due to stopbands in the Bragg reflector's phonon dispersion. By injecting a picosecond strain pulse into the resonator we excite these modes, providing an ultrafast effective modulation of the emission.
We investigate polarization cross-coupling between modes of microring resonators and waveguides due to structural asymmetries. We experimentally demonstrate the coupling between a double-layer SOI waveguide fundamental TM mode and microring higher-order radial TE modes.
We implemented a compact integrated non-degenerate source which comprises a periodically poled waveguide with highly reflective dielectric mirror coatings to obtain narrowband photon pairs based on type II parametric down-conversion. Our engineered source exploits clustering in the dispersive cavity to restrict the conversion to a predominantly single mode operation with a narrowband linewidth and...
We investigate optomechanical effects in photonic crystal slab membranes, either including a cavity or acting as an end-mirror in a Fabry-Perot cavity. We in particular demonstrate the non-linear behavior of the membranes fundamental mode.
We report the experimental demonstration and numerical modeling of phase-locking cascaded Stokes waves generated by Stimulated Brillouin Scattering via Kerr nonlinear four-wave mixing in a short, chalcogenide fiber resonator, producing phase-locked trains of picosecond pulses.
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