A5077293966- Quantum Information and Cryptography
- Orbital Angular Momentum in Optics
- Thermochemical Biomass Conversion Processes
- Random lasers and scattering media
- Digital Holography and Microscopy
- Optical Wireless Communication Technologies
- Quantum Computing Algorithms and Architecture
- Quantum Mechanics and Applications
- Laser-Matter Interactions and Applications
- High-Energy Particle Collisions Research
- Advanced Fiber Laser Technologies
- Particle physics theoretical and experimental studies
- Mechanical and Optical Resonators
- Quantum Chromodynamics and Particle Interactions
- Quantum optics and atomic interactions
- Advanced Optical Imaging Technologies
- Recycling and Waste Management Techniques
- Advanced Fluorescence Microscopy Techniques
- Neural Networks and Reservoir Computing
- Municipal Solid Waste Management
- Lignin and Wood Chemistry
- Biofuel production and bioconversion
- Energy and Environment Impacts
- Optical Network Technologies
- Coal and Its By-products
University of Ottawa
2018-2025
National Research Council Canada
2019-2025
Beijing City University
2022-2024
Beijing University of Chemical Technology
2020-2024
Maastricht University
2024
Quantum Technologies (Sweden)
2022-2024
Hainan University
2023
Sun Yat-sen University
2023
Hebei University of Technology
2020-2022
Beihang University
2022
The fractional Schrödinger equation (FSE)-a natural extension of the standard equation-is basis quantum mechanics. It can be obtained by replacing kinetic-energy operator with a derivative. Here, we report experimental realisation an optical FSE for femtosecond laser pulses in temporal domain. Programmable holograms and single-shot measurement technique are respectively used to emulate Lévy waveguide reconstruct amplitude phase pulses. Varying index initial pulse, dynamics is observed...
Abstract A nonlinear optical platform is presented to emulate a Lévy waveguide that supports the pulse propagation governed by generalized fractional Schrödinger equation (FNLSE). This approach distinguishes between intra‐cavity and extra‐cavity regimes, exploring interplay effective group‐velocity dispersion (FGVD) Kerr nonlinearity. In configuration, stable solitons enabled an engineered combination of regular dispersions in fiber cavity are observed. The soliton pulses exhibit their...
A simple approach to preparing high-dimensional entangled states by quantum interference.
Entanglement swapping generates remote quantum correlations between particles that have not interacted and is the cornerstone of long-distance communication, networks, fundamental tests science. In context spatial modes light, high-dimensional entanglement provides an avenue to increase bandwidth communications more stringent limits for foundations. Here we simultaneously swap multiple orbital angular momentum states light. The system based on a degenerate filter cannot distinguish different...
Quantum communication has been successfully implemented in optical fibres and through free-space.Fibre systems, though capable of fast key low error rates, are impractical communicating with destinations without an established fibre link.Free-space quantum channels can overcome such limitations reach long distances the advent satellite-toground links.However, turbulence, resulting from local fluctuations refractive index, becomes a major challenge by adding errors losses.Recently, interest...
In this work we investigate quantum-enhanced target detection in the presence of large background noise using multidimensional quantum correlations between photon pairs generated through spontaneous parametric down-conversion. Until now similar experiments have only utilized one pairs' many degrees freedom such as temporal and number correlations. Here, both spectral achieved over an order magnitude reduction to turn significant data acquisition time when compared utilizing modes. We believe...
Abstract We show a simple yet effective method that can be used to characterize the per pixel quantum efficiency and temporal resolution of single photon event camera for imaging applications. Utilizing pairs generated through spontaneous parametric down-conversion, detection each pixel, system, are extracted coincidence measurements. use this evaluate TPX3CAM, with appended image intensifier, measure an average $$7.4\pm 2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">...
As first demonstrated by Hanbury Brown and Twiss, it is possible to observe interference between independent light sources measuring correlations in their intensities rather than amplitudes. In this work, we apply concept of intensity interferometry holography. We combine a signal beam with reference measure cross-correlations using time-tagging single-photon camera. These reveal an pattern from which reconstruct the wavefront both phase. demonstrate principle classical quantum light,...
Vector modes are fully polarized of light with spatially varying polarization distributions, and they have found widespread use in numerous applications such as microscopy, metrology, optical trapping, nanophotonics, communications. The entanglement has attracted significant interest, it been shown to tremendous potential expanding existing enabling new ones. However, due the complex structure entangled vector (EVMs), a complete characterization these remains challenging time consuming....
Light-field microscopy (LFM) extracts volumetric data from a specimen by simultaneously capturing the positional and angular information of light rays emanating sample. While conventional LFM requires compromise between depth field (DOF) resolution, this work introduces quantum approach to eliminate harnessing position-momentum entanglement photon pairs. Compared at same can yield up tenfold improvement in DOF. This illustrates power utilizing multidimensional hopefully will inspire further...
Abstract Underwater quantum communication has recently been explored using polarization and orbital angular momentum (OAM). Here, we show that spatially structured modes, e.g., a coherent superposition of beams carrying both OAM, can also be used for underwater cryptography. We use the degree freedom to investigate impact channel length on key rates applications. The proves difficult environment establishing as optical turbulence results in significant beam wandering distortions. However,...
We examine the propagation of optical beams possessing different polarization states and spatial modes through Ottawa River in Canada. A Shack-Hartmann wavefront sensor is used to record distorted beam's wavefront. The turbulence underwater channel analysed, associated Zernike coefficients are obtained real-time. Finally, we explore feasibility transmitting as well for applications quantum cryptography.
Quantum - or classically correlated light can be employed in various ways to improve resolution and measurement sensitivity. In an "interaction-free" measurement, a single photon used reveal the presence of object placed within one arm interferometer without being absorbed by it. This method has previously been applied imaging. With technique known as "ghost imaging", entangled pairs are for detecting opaque with significantly improved signal-to-noise ratio while preventing...