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Quantum confined Stark effect and pump probe measurements are reported for the first time in a bilayer quantum dot waveguide at 1340 nm, showing a shift of 40 nm and ultrafast absorption recovery of 5ps.
Laser dynamics of asynchronously modelocked Er-fiber soliton lasers is investigated theoretically and experimentally. The pulse parameters are found to exhibit complicated slow periodic variations and can be examined experimentally by analyzing the RF spectra.
The ultrafast buildup of optically induced stress in ferromagnetic nanolayers of a SrRuO3/SrTiO3 superlattice is analyzed by femtosecond X-ray diffraction. Below the Curie temperature, magnetoelastic contractive stress reduces the expansive anharmonic phonon stress.
We utilized simultaneous coupling of higher and ground states of a single QD with two different resonant modes of a PhC nanocavity for efficient excitation and emission. Enhanced emission with strongly suppressed background was demonstrated.
We report on the experimental demonstration of efficient adiabatic light transfer between the outer waveguides in a finite array of evanescently-coupled optical waveguides with negligible excitation of all the intermediate waveguides.
We demonstrate process characterization of basic gates of an optical cluster-state quantum computing. We present complete process tomography of a single-qubit gate and evaluate the bounds on the process fidelity of a two-qubit gate.
We present reconstructions of Wigner distributions for the polarization state of three indistinguishable photons on the generalized Poincare sphere. We study a variety of states including coherent, phase and NOON states.
Time-resolved terahertz spectroscopy is used to investigate photoinduced dynamics of charge carriers in a polymer heterojunction. We directly observe instantaneous generation of highly mobile charge carriers followed by a rapid drop in their mobility.
Photonic crystal fibers were demonstrated as an optimal platform for enhancing the Raman signals to study nanoparticles properties in liquids. Raman was used to analyze stages of low concentrations of ZnO nanoparticles growth in solution.
An entangled cavity optical parametric oscillator is applied for photoacoustic spectroscopy in the wavelength range of 3.8-4.3 mum. High resolution spectra of N2O are reported around 3.8 and 4 mum.
We demonstrate 100 GHz continuous tuning and plusmn3 MHz frequency stabilization of the signal radiation delivered by an entangled cavity nanosecond OPO while the frequency fluctuation of the pump radiation is larger than 500 MHz.
We describe a scalable nanocavity array, with single quantum dots, for universal single-operation N-qubit quantum gate. A single two-level system controls the lineshapes, departing from optical-analog of electromagnetically-induced-transparency, with high fidelity and low photon loss.
We study the resonance properties of optical bowtie slot antennas in experiment and numerical simulations. The dependence of the plasmonic and Fabry-Perot-like resonances on the antenna geometry and metal properties is investigated.
We report a continuous-wave, single-longitudinal-mode, singly resonant OPO oscillating at 3.3 mum with 60% pump depletion. We observed optical bistability, thermal guiding, and clamped pump depletion for this OPO.
We present what is believed to be the first Tm:YAG laser pumped ZGP-OPO. Pump energies of 4 mJ and OPO 3-5 mum output energies of 1 mJ were achieved at 100 Hz repetition rate.
We give an overview of slow and fast light effects in semiconductor waveguides. Experimental and theoretical results are presented, emphasizing the physics as well as the limitations imposed by the carrier dynamical processes.
Coherent THz pulses at 328.2 mum were generated by mixing two CO2 laser frequencies based on collinear phase-matched difference-frequency generation in GaSe crystals. The highest average output power was measured to be 260 muW.
The near-field distribution of linear optical antennas is measured with phase-contrast scattering-type near-field microscopy (s-SNOM). A distinct scaling behavior with antenna length is observed for different structures with and without gap.
Following the theoretical suggestion of Stockman et al., we have fabricated individual V-shaped silver nanoantennas with 20-nm minimum feature size. Measured attenuated total internal reflection spectra are compared with numerical solutions of the vector Maxwell equations.
We have experimentally studied the pulse-to-pulse instability in Nd:Sc3(BO3)4 random laser. The increase of the instability at the threshold and its reduction at further increase of pumping is in line with the theoretical predictions.
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