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The concept of local symmetry has been shown to be a powerful tool in predicting and designing complex transport phenomena in stationary scattering off aperiodic media, in terms of symmetry‐adapted nonlocal currents. For time‐evolving wavepackets, the spatiotemporal correlations caused by local symmetries are more challenging to reveal. A recent formalism‐based nonlocal continuity equation shows how...
We propose a new class of photonic topological insulators, for which we use synthetic dimensions to induce topologically-protected photonic propagation in the bulk of the lattice instead of around the edge.
The Aharonov-Anandan phase is a generalization of the Berry phase and so far its observation in photonics has been elusive. Here work we report on measurements of Aharonov-Anandan phases using driven harmonic oscillator photonic lattices.
We determine the radiation loss for modulated potentials analytically and implement this setting experimentally utilizing laser-written photonic waveguides. We foresee numerous applications, in particular in PT-symmetric systems.
We report on our latest findings on photonic Quantum Walks (QW) of entangled particles in several quantum transport regimes as for instance in photonic Bloch lattices or disordered lattices. Furthermore, the discrete fractional Fourier transform of quantum states is presented in the context of QWs.
We demonstrate theoretically and experimentally topological interface states in a passive effective PT-symmetric dimerized waveguide array. The PT-symmetric system has unbroken PT symmetry: all eigenvalues in the spectrum are real, despite the system's non-Hermiticity.
We report on the experimental realization of an optical version of the fractional and standard Fourier transform using discrete photonic lattices. Our approach is fully integrated and free of bulk optical components. We investigate the transformation of classical and quantum light.
We introduce a new perfect state transfer protocol based on single-photon W-eigenstates of photonic lattices. Such W-eigenstates appear as impulse response of the system, e.g., when single photons are launched into single sites.
We predict and observe the formation of a compact surface bound state in the continuum due to an optical Fano resonance. We employ a one-dimensional array of optical waveguides with an additional side-coupled waveguide inducing the resonance, and prove that the localized mode amplitude vanishes completely at all locations beyond the resonant waveguide.
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