The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We describe a new technique for preparing and detecting spatial spin-correlations and multipartite entanglement in a quantum lattice gas based on entropic cooling via quantum non-demolition (QND) measurement and feedback.
We experimentally demonstrate the impact of disorder on edge states in photonic graphene and find strong evidence that not only chirality but also the vanishing of the density-of-states at zero-energy is preserved under structural disorder.
We present the first experimental observation of a Floquet Topological Insulator in any physical system. We realize optical topologically-protected unidirectional edge states, without magnetic fields, using honeycomb photonic lattice of helical waveguides.
We demonstrate optical guiding and acceleration of 2.2μm polystyrene particles in a fluidic flow using uniform and non-uniform optical lattices generated at 1550nm wavelengths by silicon-on-insulator multimode-interference waveguide-based arrayed optical tweezers (SMART).
One of the elementary processes in quantum magnetism is the propagation of spin excitations. Here we study the quantum dynamics of a deterministically created spin-impurity atom, as it propagates in a one-dimensional lattice system [1]. We probe the spatial probability distribution of the impurity at different times using single-site-resolved imaging of bosonic atoms in an optical lattice. In the...
We experimentally demonstrate super-diffusion and the delocalization-localization phase transition in a random dimer structure. The system is implemented using weakly-coupled optical waveguides.
We present an analytic spectral wave theory describing the propagation of wavepackets in dynamically-evolving disordered potentials, in the hyper-transport regime. The results are examined in the context of Bohr's correspondence principle.
We explore two degenerate high-orbital exciton-polariton condensates in a honeycomb lattice. We measure the order parameter of the condensates, identifying the vortex-antivortex lattice order. We also study the intensity correlation relation between two condensates.
We experimentally and theoretically demonstrate a topological transition in photonic graphene. By applying a uniaxial strain, the system transforms from one that supports states localized on the edge to one that does not.
We present photonic topological insulator-solitons: self-trapped wavepackets that form a self-localized edge states residing in the bulk of a photonic topological insulator (helical waveguide honeycomb lattice), while continuously rotating with a given directionality.
We demonstrate that supersymmetry can furnish apparently dissimilar optical structures with the same scattering and guided-wave characteristics. We explore continuous one-dimensional SUSY arrangements in order to design a new class of versatile integrated filters.
We demonstrate strong correspondence between the emission characteristics of core-shell GaN nanorod array LEDs and guided resonance modes. We identify a nanorod array which produces 26 times more total brightness than an equivalent slab.
Using ultrafast optical-pump terahertz-probe spectroscopy, we measure the low-temperature electronic cooling in multilayer epitaxial graphene and develop a theory of hot-carrier equilibration based on interlayer energy transfer via screened Coulomb interactions.
By measuring the vector light shift in spin-polarized Cs atoms trapped in a cavity built-up optical lattice, we have demonstrated linear polarization that is pure to within 2×10−8 in fractional intensity.
SiGe/Si quantum-well nanomembranes, where stress due to lattice mismatch is relaxed via elastic strain sharing rather than defect formation, are developed and their potential for far-infrared intersubband device applications is demonstrated.
We report the first experimental observation of solitons propagating in discrete steps through a temporal photonic lattice, which is implemented in a fiber-loop setup. Stable propagation over fifty coupling lengths is achieved.
We fabricate a hybrid nanoswitch with polarization-dependent properties by tailoring the near-field nanoenvironment of a plasmonic nanoantenna. Positioning a phase-transforming na-noparticle at the nanoantenna's optical focus allows modulation of nanoscale light fields with specific polarizations.
We study defect and surface states in PT-symmetric optical mesh lattices. Such localized states can emerge in both the real and complex domain and can exhibit peculiar properties that are otherwise unattainable in Hermitian systems.
A novel approach to investigate the dynamics of indistinguishable particles in non-Hermitian lattice systems exhibiting loss is presented. Especially analyzed are two-particle dynamics in quasi-parity-time-symmetric systems for a variety of input states.
We demonstrate photonic lattices with segmentation-based linear self imaging as integrated optical limiters. The diffractive propagation between input and output port offers the additional benefit of substantially decreased nonlinear spectral distortions.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.