A5083726517- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Nonlinear Photonic Systems
- Laser Material Processing Techniques
- Topological Materials and Phenomena
- Photorefractive and Nonlinear Optics
- Quantum Information and Cryptography
- Optical Network Technologies
- Photonic Crystals and Applications
- Quantum Computing Algorithms and Architecture
- Solid State Laser Technologies
- Mechanical and Optical Resonators
- Advanced Surface Polishing Techniques
- Quantum Mechanics and Non-Hermitian Physics
- Laser-Matter Interactions and Applications
- Nonlinear Optical Materials Studies
- Phase-change materials and chalcogenides
- Nonlinear Waves and Solitons
- Laser-induced spectroscopy and plasma
- Algebraic structures and combinatorial models
- Quantum optics and atomic interactions
- Semiconductor Quantum Structures and Devices
- Nonlinear Dynamics and Pattern Formation
- Advanced Fiber Optic Sensors
Institute of Spectroscopy
2022-2025
Lomonosov Moscow State University
2019-2025
Moscow State University
2023-2025
Quantum Technologies (Sweden)
2023
Russian Quantum Center
2022
Moscow Institute of Physics and Technology
2016-2021
Prokhorov General Physics Institute
2016
We report the experimental observation of nonlinear light localization and edge soliton formation at edges fs-laser written trimer waveguide arrays, where transition from nontopological to topological phases is controlled by spacing between neighboring trimers. found that, in former regime, solitons occur only above a considerable power threshold, whereas latter one they bifurcate linear states. Edge are observed broad range their propagation constant falls into gaps system, while partial...
Introduction of controllable deformations into periodic materials that lead to disclinations in their structure opens novel routes for construction higher-order topological insulators hosting states at disclinations. Appearance these is consistent with the bulk-disclination correspondence principle, and due filling anomaly results fractional charges boundary unit cells. So far, disclination were observed only linear regime, while interplay between nonlinearity topology systems has been never...
We observe linear and nonlinear light localization at the edges in corners of truncated moiré arrays created by superposition periodic mutually twisted Pythagorean angles square sublattices. Experimentally exciting corner modes femtosecond-laser written we find drastic differences their properties comparison with bulk excitations. also address impact nonlinearity on experimentally crossover from quasilocalized states to surface solitons emerging higher input powers. Our results constitute...
Low-loss photonic integrated circuits (PICs) are the key elements in future quantum technologies, nonlinear photonics and neural networks. The low-loss technology targeting C-band application is well established across multi-project wafer (MPW) fabs, whereas near-infrared (NIR) PICs suitable for state-of-the-art single-photon sources still underdeveloped. Here, we report labs-scale process optimization optical characterization of tunable applications. We demonstrate lowest propagation losses...
Ion-doped crystal-based compact devices capable of beam splitting and coupling are enthralling for a broad range classical quantum integrated photonics applications. In this work, we report on the fabrication depressed-cladding waveguide 2D 2 × 2, 1 3D 3 directional couplers in Tm + :YAG crystal by femtosecond laser writing. The performances characterized at 810 nm, showing single-mode guidance, polarization independence, finely matched ratios. These results open up new opportunities...
Quasicrystals are unique systems that, unlike periodic structures, lack translational symmetry but exhibit long-range order dramatically enriching the system properties. While evolution of light in bulk photonic quasicrystals is well studied, experimental evidences localization near edge truncated quasicrystal structures practically absent. In this Letter, we observe both linear and nonlinear at edges radially cropped waveguide arrays, forming an aperiodic Penrose tiling. Our theoretical...
Abstract Tunable linear-optical interferometers are a key element in the implementation of both classical and quantum information technologies. At same time, during production process, these systems subject to various instrumental imperfections it is necessary be able determine with what accuracy transformations manufactured device capable reproduce. For integrated devices, such tasks difficult perform due difficulties obtaining direct access individual optical elements circuit. Existing...
We present an experimental implementation of a two-qubit photonic quantum processor fabricated using femtosecond laser writing technology. employ to create low-loss reconfigurable chip, implementing precise single-qubit and operations. careful characterization the performance single- gates. An exemplary application estimating ground state energy H2 molecule variational eigensolver algorithm is demonstrated. Our results highlight potential technology deliver high quality small-scale processors.
We introduce a programmable eight-port interferometer with the recently proposed error-tolerant architecture capable of performing broad class transformations. The has been fabricated femtosecond laser writing, and it is largest this kind to date. have demonstrated its advantageous error tolerance by showing an operation in wavelength range from 920 980 nm, which particularly relevant for quantum photonics due efficient photon sources existing range. Our work highlights importance developing...
Our study demonstrates successful error mitigation of indistinguishably-related noise in a quantum photonic processor through the application zero-noise extrapolation (ZNE) technique. By measuring observable values at different levels, we were able to extrapolate toward noise-free regime. We examined impact partial distinguishability photons two-qubit implementing variational eigensolver for Schwinger Hamiltonian. findings highlight effectiveness technique mitigating and improving accuracy...
Abstract We report the experimental observation of periodic switching topological edge states between two dimerized fs-laser written waveguide arrays. Switching occurs due to overlap modal fields from forbidden gap, when they are simultaneously present in arrays brought into close proximity. found that phenomenon for both strongly and weakly localized rate increases with decreasing spacing When contact nontopological ones, gap does not occur, while one observes either formation nearly...
Abstract The quantum Zeno effect refers to the slowdown of decay a system due frequent measurements. It has been extended beyond systems, manifesting itself in such phenomena as suppression output beam by sufficiently strong absorption introduced guiding optical systems. In this case, phenomenon is termed macroscopic effect. Here observation topological photonic reported. based on for only subspace edge modes that can propagate and does not rely existence exceptional points. By introducing...
We report low-loss multiscan waveguides fabricated in fused silica using femtosecond-laser-writing technology. The principle allows the writing regime to be tailored excel at key features of any integrated photonic platform: coupling losses and propagation losses. optimized parameters for different sizes square-shaped reached mode overlap value with a standard single-mode optical fiber above 98.8% demonstrated very low 0.2 dB/facet on average. Propagation amounted 0.07 dB/cm. applied...
We consider coupled waveguide lattices as an architecture that implement a wide range of multiport transformations. In this architecture, particular transfer matrix is obtained through setting the step-wise profiles propagation constants seen by field evolving in lattice. To investigate transformation capabilities, implementation set matrices taken at random and cases discrete Fourier transform, Hadamard permutation have been described. Because schemes are more compact than their traditional...
We derive the area theorem for light pulses interacting with inhomogeneously broadened ensemble of two-level atoms in a single-mode optical waveguide and present its analytical solution Gaussian-type modes, which demonstrates significant difference from formation $2\pi$ by plane waves. generalize this to description photon echo apply it two-pulse (primary) revival silenced (ROSE) protocol quantum memory. For first time, we implemented ROSE laser-written made an optically thin crystal...
We study both, experimentally and theoretically, propagation of light in the fs-laser written rotating square waveguide arrays present first experimental evidence localization induced by rotation periodic structure direction propagation. Such linear occurs either corners truncated array, where it results from interplay between centrifugal effect total internal reflection at borders or center creates effective attractive optical potential. The degree bulk corner modes emerging due to...
We present tunable photonic integrated circuits platform with low losses in a wide wavelength bandwidth from 900 to 1550 nm based on Si <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> N xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> waveguides.
The features of nonlinear propagation high-intensity pulses in the short-wavelength infrared range extended one-dimensional waveguide arrays with different spatial periods, formed fused silica by laser writing, are studied. More than tenfold self-compression femtosecond up to a duration several periods light field is experimentally observed.
The integrated photonic platform has established itself as a versatile tool for experimental implementation of linear optical quantum computations, that base on unitary transformation the input states. In this paper we investigate potential application waveguide lattice architecture to realization arbitrary matrices. We propose construction and find its parameters using methods numerical optimization. Also showed necessary are within reach femtosecond laser writing technology.
The numerical emulation of quantum physics and chemistry often involves an intractable number degrees freedom admits no known approximation in the general form. In practice, representing quantum-mechanical states using available methods becomes exponentially more challenging with increasing system size. Recently, algorithms implemented as variational models have been proposed to accelerate such simulations. Here, we study effect noise on phase transition Schwinger model within a framework....
In the investigation we demonstrated technique of direct femtosecond laser writing tracks with induced refractive index at record low depth under surface lithium niobate (3-15 μm). It was shown that help proposed one can be written claddings near optical waveguides plays a key role in fabrication fast electro-optical modulators operating voltage. Fundamental problem resolved consists suppression negative factors impeding inscription depths. To prevent breakdown crystal used high numerical...