466 citations · 1.2k across the 44 of their papers we have counts for
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Quantum scanning synthetic optical holography
Josué R. León-Torres, Byron Caiza, Nadia Baumann +7
Synthetic optical holography (SOH) introduced holographic reconstruction into scanning optical microscopy, enabling quantitative phase imaging with sequential acquisition and point…
Noise resilient real-time phase imaging via undetected light
Josué R. León-Torres, Patrick Hendra, Yugant Mukeshbhai Hadiyal +5
Quantum imaging with undetected light has recently emerged as a technique in which quantum correlations and nonlinear interferometry are combined to decouple illumination and detec…
Quantum Phase Gradient Imaging Using a Nonlocal Metasurface System
Jinliang Ren, Jinyong Ma, Katsuya Tanaka +4
Quantum phase imaging enables the analysis of transparent samples with thickness and refractive index variations in scenarios requiring precise measurements under low-light conditi…
Enhanced photon-pair generation from a van der Waals metasurface
Tongmiao Fan, Yilin Tang, Shaun Lung +11
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…
Mid-infrared quantum scanning microscopy via visible light beyond spatial correlations
Josué R. León-Torres, Vasile-Laurentiu Dosan, Marija M. Ćurčić +4
The mid-infrared (MIR) region of the electromagnetic spectrum spans from 2- to 25-, serving as a valuable tool for accessing rich chemical information. Functional grou…
Broadband bright biphotons from periodically poled triple-resonance metasurface
Jihua Zhang, Chaoxin Shi, Jinyong Ma +5
Biphotons from spontaneous parametric down conversion with broad bandwidth are highly wanted in many quantum technologies. However, achieving broad bandwidth in both frequency and…
Generation of tunable quantum entanglement via nonlinearity symmetry breaking in semiconductor metasurfaces
Jinyong Ma, Tongmiao Fan, Tuomas Haggren +10
Tunable biphoton quantum entanglement generated from nonlinear processes is highly desirable for cutting-edge quantum technologies, yet its tunability is substantially constrained…
Fabrication of low-loss lithium niobate on insulator waveguides on the wafer scale
Mohammadreza Younesi, Thomas Kasebier, Ilia Elmanov +8
We report on the wafer scale fabrication of single mode low-loss lithium niobate on insulator waveguides utilizing a chemically amplified resist and an optimized dry etching method…
Off-axis holographic imaging with undetected light
Josué R. León-Torres, Filip Krajinić, Mohit Kumar +5
Quantum imaging with undetected light (QIUL) can retrieve amplitude and phase information of an object by exploiting the quantum correlations of photon-pairs generated through spon…
Robust Classical and Quantum Polarimetry with a Single Nanostructured Metagrating
Shaun Lung, Kai Wang, Nicolas R. H. Pedersen +2
We formulate a new conceptual approach for one-shot complete polarization state measurement with nanostructured metasurfaces applicable to classical light and multi-photon quantum…
Directionally Tunable Co- and Counter-Propagating Photon Pairs from a Nonlinear Metasurface
Maximilian A. Weissflog, Jinyong Ma, Jihua Zhang +6
Nonlinear metasurfaces have recently been established as a new platform for generating photon pairs via spontaneous parametric down-conversion. While for classical harmonic generat…
Nonlinear Nanoresonators for Bell State Generation
Maximilian A. Weissflog, Romain Dezert, Vincent Vinel +6
Entangled photon states are a fundamental resource for optical quantum technologies and investigating the fundamental predictions of quantum mechanics. Up to now such states are ma…
Enhanced Surface Second Harmonic Generation in Nanolaminates
Fatemeh Abtahi, Pallabi Paul, Sebastian Beer +6
Second-harmonic generation (SHG) is a second-order nonlinear optical process that is not allowed in media with inversion sym-metry. However, due to the broken symmetry at the surfa…
Sub-minute Quantum Ghost Imaging in the infrared enabled by a "looking back" SPAD array
Valerio Flavio Gili, Dupish Dupish, Andres Vega +6
Quantum Ghost Imaging (QGI) is an intriguing imaging protocol that exploits photon-pair correlations stemming from spontaneous parametric down-conversion (SPDC). QGI retrieves imag…
Meta-Optics with Lithium Niobate
Anna Fedotova, Luca Carletti, Attilio Zilli +8
The rapid development of metasurfaces - 2D ensembles of engineered nanostructures - is presently fostering a steady drive towards the miniaturization of many optical functionalitie…
Nonlinear quantum spectroscopy with Parity-Time symmetric integrated circuits
Pawan Kumar, Sina Saravi, Thomas Pertsch +2
We propose a novel quantum nonlinear interferometer design that incorporates a passive PT symmetric coupler sandwiched between two nonlinear sections where signal-idler photon pair…
Group index matched frequency conversion in lithium niobate on insulator waveguides
Pawan Kumar, Mohammadreza Younesi, Sina Saravi +2
Sources of spectrally engineered photonic states are a key resource in several quantum technologies. Of particular importance are the so-called factorizable biphoton states which p…
Mid-Infrared Photon-Pair Generation in AgGaS
Mohit Kumar, Pawan Kumar, Andres Vega +3
We demonstrate non-degenerate photon-pair generation by spontaneous parametric down conversion in a silver gallium sulfide AgGaS crystal. By tuning the pump wavelength, we achi…
Spontaneous Parametric Down-Conversion from Resonant Metasurfaces
Tomás Santiago-Cruz, Anna Fedotova, Vitaliy Sultanov +7
All-dielectric optical metasurfaces are a workhorse in nano-optics due to both their ability to manipulate light in different degrees of freedom and their excellent performance at…
Color filter arrays based on dielectric metasurface elements
Jonas Berzins, Fabrizio Silvestri, Giampiero Gerini +3
Digital imaging has been steadily improving over the past decades and we are moving towards a wide use of multi- and hyperspectral cameras. A key component of such imaging systems…
Direct and High-Throughput Fabrication of Mie-Resonant Metasurfaces via Single-Pulse Laser Interference
Jonas Berzinš, Simonas Indrišiūnas, Koen van Erve +8
High-index dielectric metasurfaces featuring Mie-type electric and magnetic resonances have been of a great interest in a variety of applications such as imaging, sensing, photovol…
Nanostructure-modulated planar high spectral resolution spectro-polarimeter
L. Pjotr Stoevelaar, Jonas Berzinš, Fabrizio Silvestri +7
We present a planar spectro-polarimeter based on Fabry-P{é}rot cavities with embedded polarization-sensitive high-index nanostructures. A m-thick spectro-polarimetric system f…
Laser-Induced Spatially-Selective Tailoring of High-Index Dielectric Metasurfaces
Jonas Berzinš, Simonas Indrišiūnas, Stefan Fasold +7
Optically resonant high-index dielectric metasurfaces featuring Mie-type electric and magnetic resonances are usually fabricated by means of planar technologies, which limit the de…
Sub-micrometer Nanostructure-based RGB Filters for CMOS Image Sensors
Jonas Berzinš, Stefan Fasold, Thomas Pertsch +2
Digital color imaging relies on spectral filters on top of a pixelated sensor, such as a CMOS image sensor. An important parameter of imaging devices is their resolution, which dep…