Andrey A. Sukhorukov
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View article: Quantum Phase Gradient Imaging Using a Nonlocal Metasurface System
Quantum Phase Gradient Imaging Using a Nonlocal Metasurface System Open
Quantum phase imaging enables the analysis of transparent samples with thickness and refractive index variations in scenarios requiring precise measurements under low-light conditions. Here, we present a compact quantum phase-gradient imag…
View article: Enhanced Photon-Pair Generation from a van der Waals Metasurface
Enhanced Photon-Pair Generation from a van der Waals Metasurface Open
Quantum photon pairs play a pivotal role in many quantum applications. Metasurfaces, two-dimensional arrays of nanostructures, have been studied intensively to enhance and control pair generation via spontaneous parametric downconversion (…
View article: Nonlinearity symmetry breaking for generating tunable quantum entanglement in semiconductor metasurfaces
Nonlinearity symmetry breaking for generating tunable quantum entanglement in semiconductor metasurfaces Open
Tunable biphoton quantum entanglement generated from nonlinear flat optics is highly desirable for cutting-edge quantum technologies, yet its tunability is substantially constrained by the symmetry of material nonlinear tensors. Here, we o…
View article: Enhanced tunable photon-pair generation from a nonlinear metasurface with a guided-mode cavity
Enhanced tunable photon-pair generation from a nonlinear metasurface with a guided-mode cavity Open
The ability to generate quantum entangled photon pairs through spontaneous parametric down conversion (SPDC) is playing a pivotal role in many applications in quantum technologies, including quantum communications, quantum computation, and…
View article: Flatband nonlinear metasurface for broad-angle photon-pair generation
Flatband nonlinear metasurface for broad-angle photon-pair generation Open
Current nonlinear metasurface photon-pair sources face limitations in angular emission range and uniformity due to optical resonance dispersion, potentially hindering their application in quantum imaging, which demands broad-angle emission…
View article: Integrated generation of vortices and frequency conversion with metasurfaces
Integrated generation of vortices and frequency conversion with metasurfaces Open
View article: Broadband bright biphotons from periodically poled triple-resonance metasurface
Broadband bright biphotons from periodically poled triple-resonance metasurface Open
Biphotons from spontaneous parametric down conversion with broad bandwidth are highly wanted in many quantum technologies. However, achieving broad bandwidth in both frequency and momentum while keeping a high rate remains a challenge for …
View article: Quantum imaging using spatially entangled photon pairs from a nonlinear metasurface
Quantum imaging using spatially entangled photon pairs from a nonlinear metasurface Open
Nonlinear metasurfaces with subwavelength thickness were recently established as versatile platforms for the enhanced and tailorable generation of entangled photon pairs. The small dimensions and inherent stability of integrated metasurfac…
View article: Metasurface-enabled small-satellite polarisation imaging
Metasurface-enabled small-satellite polarisation imaging Open
Polarisation imaging enhances the information available from satellite remote sensing. We present a metasurface designed for ultra-compact polarisation imaging with error monitoring, suitable for observing the Earth's surface with small sa…
View article: Metasurface-enabled small-satellite polarisation imaging
Metasurface-enabled small-satellite polarisation imaging Open
Polarisation imaging is used to distinguish objects and surface characteristics that are otherwise not visible with black-and-white or colour imaging. Full-Stokes polarisation imaging allows complex image processing like water glint filter…
View article: Demonstration of lossy linear transformations and two-photon interference on a photonic chip
Demonstration of lossy linear transformations and two-photon interference on a photonic chip Open
Studying quantum correlations in the presence of loss is of critical importance for the physical modeling of real quantum systems. Here, we demonstrate the control of spatial correlations between entangled photons in a photonic chip, desig…
View article: Angle multifunctional dichroism in metasurfaces
Angle multifunctional dichroism in metasurfaces Open
We demonstrate metasurfaces with strong polarization dichroism that depends on the angle of incidence. We present original designs obtained through topology optimization that selectively transmit specific linear or circular polarizations a…
View article: Uniformly polarized multi-output illumination by metasurfaces performing near-complete conversion of unpolarized light
Uniformly polarized multi-output illumination by metasurfaces performing near-complete conversion of unpolarized light Open
View article: Generation of tunable quantum entanglement via nonlinearity symmetry breaking in semiconductor metasurfaces
Generation of tunable quantum entanglement via nonlinearity symmetry breaking in semiconductor metasurfaces Open
Tunable biphoton quantum entanglement generated from nonlinear processes is highly desirable for cutting-edge quantum technologies, yet its tunability is substantially constrained by the symmetry of material nonlinear tensors. Here, we ove…
View article: Quantum Imaging Using Spatially Entangled Photon Pairs from a Nonlinear Metasurface
Quantum Imaging Using Spatially Entangled Photon Pairs from a Nonlinear Metasurface Open
Nonlinear metasurfaces with subwavelength thickness were recently established as versatile platforms for the enhanced and tailorable generation of entangled photon pairs. The small dimensions and inherent stability of integrated metasurfac…
View article: Directionally tunable co- and counterpropagating photon pairs from a nonlinear metasurface
Directionally tunable co- and counterpropagating photon pairs from a nonlinear metasurface Open
Nonlinear metasurfaces have recently been established as a new platform for generating photon pairs via spontaneous parametric down-conversion. While for classical harmonic generation in metasurfaces a high level of control over all degree…
View article: Metasurfaces for infrared multi-modal microscopy: phase contrast and bright field
Metasurfaces for infrared multi-modal microscopy: phase contrast and bright field Open
Different imaging modalities are used to extract the diverse information carried in an optical field. Two prominent modalities include bright field and phase contrast microscopy that can visualize the amplitude and phase features of a samp…
View article: Inverse design of nonlinear metasurfaces for sum frequency generation
Inverse design of nonlinear metasurfaces for sum frequency generation Open
Sum frequency generation (SFG) has multiple applications, from optical sources to imaging, where efficient conversion requires either long interaction distances or large field concentrations in a quadratic nonlinear material. Metasurfaces …
View article: Enhanced Infrared Vision by Nonlinear Up‐Conversion in Nonlocal Metasurfaces
Enhanced Infrared Vision by Nonlinear Up‐Conversion in Nonlocal Metasurfaces Open
The ability to detect and image short‐wave infrared light has important applications in surveillance, autonomous navigation, and biological imaging. However, the current infrared imaging technologies often pose challenges due to large foot…
View article: Metasurface-based Toroidal Lenslet Array Design for Addressing Laser Guide Star Elongation
Metasurface-based Toroidal Lenslet Array Design for Addressing Laser Guide Star Elongation Open
The Giant Magellan Telescope will use laser tomography adaptive optics to correct for atmospheric turbulence using artificial guide stars created in the sodium layer of the atmosphere (altitude ~95km). The sodium layer has appreciable thic…
View article: Single-shot characterization of photon indistinguishability with dielectric metasurfaces
Single-shot characterization of photon indistinguishability with dielectric metasurfaces Open
Characterizing the indistinguishability of photons is a key task in quantum photonics, underpinning the tuning and stabilization of the photon sources and thereby increasing the accuracy of quantum operations. The protocols for measuring t…
View article: Demonstration of Lossy Linear Transformations and Two-Photon Interference on a Photonic Chip
Demonstration of Lossy Linear Transformations and Two-Photon Interference on a Photonic Chip Open
Studying quantum correlations in the presence of loss is of critical importance for the physical modeling of real quantum systems. Here, we demonstrate the control of spatial correlations between entangled photons in a photonic chip, desig…
View article: Nonlocal quantum differentiation between polarization objects using entanglement
Nonlocal quantum differentiation between polarization objects using entanglement Open
For a wide range of applications, a fast, non-destructive, remote, and sensitive identification of samples with predefined characteristics is preferred instead of their full characterization. In this work, we report on the experimental imp…
View article: Engineering Quantum Light Sources with Flat Optics
Engineering Quantum Light Sources with Flat Optics Open
Quantum light sources are essential building blocks for many quantum technologies, enabling secure communication, powerful computing, and precise sensing and imaging. Recent advancements have witnessed a significant shift toward the utiliz…
View article: Robust Classical and Quantum Polarimetry with a Single Nanostructured Metagrating
Robust Classical and Quantum Polarimetry with a Single Nanostructured Metagrating Open
We formulate a new conceptual approach for one-shot complete polarization state measurement with nanostructured metasurfaces applicable to classical light and multiphoton quantum states by drawing on the principles of generalized quantum m…
View article: Single-shot characterization of photon indistinguishability with dielectric metasurfaces
Single-shot characterization of photon indistinguishability with dielectric metasurfaces Open
Characterizing the indistinguishability of photons is a key task in quantum photonics, underpinning the tuning and stabilization of the photon sources and thereby increasing the accuracy of quantum operations. The protocols for measuring t…
View article: Nonlocal quantum differentiation between polarization objects using entanglement
Nonlocal quantum differentiation between polarization objects using entanglement Open
For a wide range of applications a fast, non-destructive, remote, and sensitive identification of samples with predefined characteristics is preferred instead of their full characterization. Here, we report on the experimental implementati…
View article: Nonlinear metasurfaces for the generation of quantum photon-pair states
Nonlinear metasurfaces for the generation of quantum photon-pair states Open
View article: Optimization of metasurfaces for lasing with symmetry constraints on the modes
Optimization of metasurfaces for lasing with symmetry constraints on the modes Open
The development of active metasurface systems, such as lasing metasurfaces, requires the optimization of multiple modes at the absorption and lasing wavelength bands, including their quality factor, mode profile and angular dispersion. Oft…
View article: Full conversion of unpolarized to fixed-polarization light with topology optimized metasurfaces
Full conversion of unpolarized to fixed-polarization light with topology optimized metasurfaces Open
Conventional polarizers and polarization beam splitters have a fundamental limit of 50\% efficiency when converting unpolarized light into one specific polarization. Here, we overcome this restriction and achieve near-complete conversion o…