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Transition from Dirac points to exceptional points in anisotropic waveguides
(American Physical Society, 2019-10-04)
Article
Open AccessWe uncover the existence of Dirac and exceptional points in waveguides made of anisotropic materials, and study the transition between them. Dirac points in the dispersion diagram appear at propagation directions where the ... -
Angular control of anisotropy-induced bound states in the continuum
(2019-11-01)
Article
Open AccessRadiation of leaky modes existing in anisotropic waveguides can be cancelled by destructive interference at special propagation directions relative to the optical axis orientation, resulting in fully bound states surrounded ... -
Random number generation by coherent detection of quantum phase noise
(2020-02-17)
Article
Open AccessIn 2010 Qi et al. [Opt. Lett. 35(3), 312 (2010)] demonstrated a random number generator based on the drift of the phase of a laser due to spontaneous emission, The out-of-the-lab implementation of this scheme presents two ... -
Localization and delocalization of light in photonic moiré lattices
(Macmillan Publishers, 2020-01-02)
Article
Restricted access - publisher's policyMoiré lattices consist of two superimposed identical periodic structures with a relative rotation angle. Moiré lattices have several applications in everyday life, including artistic design, the textile industry, architecture, ... -
Robust ultrashort light bullets in strongly twisted waveguide arrays
(American Institute of Physics (AIP), 2019-09-27)
Article
Open AccessWe introduce a new class of stable light bullets that form in twisted waveguide arrays pumped with ultrashort pulses, where twisting offers a powerful knob to tune the properties of localized states. We find that, above a ... -
Conformal transformation of Dyakonov surface waves into bound states of cylindrical metamaterials
(American Physical Society (APS), 2019-11-05)
Article
Open AccessWe put forward the use of transformation optics to map surface waves that exist as one-dimensional modes supported by anisotropic structures into bound states in two-dimensional geometries. Specifically, we show the conformal ... -
Knotting fractional-order knots with the polarization state of light
(2019-08-01)
Article
Open AccessThe fundamental polarization singularities of monochromatic light are normally associated with invariance under coordinated rotations: symmetry operations that rotate the spatial dependence of an electromagnetic field by ... -
Temperature-controlled entangled-photon absorption spectroscopy
(American Institute of Physics (AIP), 2019-07-09)
Article
Open AccessEntangled two-photon absorption spectroscopy (TPA) has been widely recognized as a powerful tool for revealing relevant information about the structure of complex molecular systems. However, to date, the experimental ... -
How to automate a kinematic mount using a 3D printed arduino-based system
(2018-06-01)
Article
Open AccessWe demonstrate a simple, flexible and cost-effective system to automatize most of the kinematic mounts available nowadays on the market. It combines 3D-printed components, an Arduino board, stepper motors and simple ... -
Hong-Ou-Mandel interferometry on a biphoton beat note
(2019-05-24)
Article
Open AccessHong-Ou-Mandel interference, the fact that identical photons that arrive simultaneously on different input ports of a beam splitter bunch into a common output port, can be used to measure optical delays between different ... -
Metastability of quantum droplet clusters
(American Institute of Physics (AIP), 2019-05-14)
Article
Open AccessWe show that metastable ring-shaped clusters can be constructed from two-dimensional quantum droplets in systems described by the Gross-Pitaevskii equations augmented with Lee-Huang-Yang quantum corrections. The clusters ... -
Spatial mode detection by frequency upconversion
(2019-02-01)
Article
Open AccessThe efficient creation and detection of spatial modes of light has become topical of late, driven by the need to increase photon bit-rates in classical and quantum communications. Such mode creation/detection is traditionally ...
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