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We explore a novel method to guide particles that is controllable by the frequency of light. With detailed stochastic simulations, we demonstrate a very high degree of control, independent of the direction of the light beam. This method is insensitive to scattering and applicable to many particles.
Quantum random walks (QRWs) implemented in photonic media have seen significant recent attention for their applicability to problems in quantum simulation and quantum transport. However, performing statistically robust and high-fidelity studies of these problems has required either manual tuning of optical elements or the fabrication of multiple integrated photonic chips. Here, we present our recent...
We explore optical forces and torques acting on Janus nanoparticles in a plane electromagnetic wave. We find rotationally stable points and propose a scheme for all-optical manipulation of orientation and position of Janus nanoparticles.
We introduce a reconfigurable silicon quantum photonic network for implementing general linear optics transformations in the spatial mode basis. This network enables implementation of a range of quantum algorithms; we discuss the phase estimation algorithm.
We present a scheme for recovering the input signal launched into a waveguide array from partial measurements of its output intensity, given that the input is sparse. Possible applications include optical interconnects, and quantum tomography.
We demonstrate that the eigenmodes of a waveguide array with disorder in the coupling between adjacent guides are pairwise conjugated. Therefore, self-imaging via phase-segmentation is inherently insensitive to such an off-diagonal disorder.
We investigate the impact of nonlinearity on the perfect imaging by segmentation in photonic lattices with disorder. We find the presence of strongly localized Anderson modes renders the imaging significantly more susceptible to nonlinear perturbations.
We present an analytical description of a new class of three-core adiabatic following directional couplers. Using a multiple-scale WKB method we obtain closed-form expressions describing the optical field dynamics in such structures. The adiabatic evolution occurring in this particular three-core configuration can lead to a spatial switch over of local supermodes and to an irreversible power transfer.
We present direct experimental measurements of localized eigenmodes in disordered one-dimensional waveguide arrays. In the nonlinear regime we observe delocalization of localized states, exhibiting different features in the limits of weak and strong disorder.
We present experimental evidence for the formation of X-waves in nonlinear AlGaAs waveguide arrays. These results agree with numerical simulations based on the discrete nonlinear Schrodinger equation with an appropriate temporal dispersion term
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