A5038767807- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Photonic and Optical Devices
- Geological Studies and Exploration
- Advanced Fiber Laser Technologies
- Atomic and Subatomic Physics Research
- Quantum Mechanics and Applications
- Hydrocarbon exploration and reservoir analysis
- Photorefractive and Nonlinear Optics
- Mechanical and Optical Resonators
- Laser-Matter Interactions and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Geological and Geophysical Studies
- Optical Network Technologies
- Quantum and electron transport phenomena
- Plasmonic and Surface Plasmon Research
- Methane Hydrates and Related Phenomena
- Quantum Computing Algorithms and Architecture
- Reservoir Engineering and Simulation Methods
- Random lasers and scattering media
- Neural Networks and Reservoir Computing
- Advanced Fluorescence Microscopy Techniques
- Semiconductor Lasers and Optical Devices
- Photonic Crystals and Applications
- Advanced DC-DC Converters
Kazan State Technical University named after A. N. Tupolev
2016-2025
Institute of Petroleum Geology and Geophysics
2007-2024
Kazan E. K. Zavoisky Physical-Technical Institute
2011-2024
Novosibirsk State University
2019-2023
Russian Academy of Sciences
2001-2023
Kazan Scientific Center
2003-2023
Russian Quantum Center
2022
University of Calgary
2008-2019
Kazan Federal University
2001-2019
Kazan State Technological University
2018
Abstract Many applications of quantum communication crucially depend on reversible transfer states between light and matter. Motivated by rapid recent developments in theory experiment, we review research related to memory based a photon‐echo approach solid state material with emphasis use repeater. After introducing communication, the repeater concept, properties required be useful repeater, describe historical development from spin echoes, discovered 1950, memory. We present simple...
An idea for how to reconstruct the quantum state of a nonstationary single-photon wave packet absorbed in macroscopic medium with inhomogeneously broadened lines is presented. analytical treatment problem performed and requirements on proposed scheme complete recovery recorded probability close unity described. The physical nature present also discussed.
Effective multi-mode photon echo based quantum memory on multi-atomic ensemble in the QED cavity is proposed. Analytical solution obtained for efficiency that can be equal unity when optimal relations and atomic parameters are held. Numerical estimation realistic demonstrates high of optically thin resonant system.
We propose a quantum memory based on the precreated long-lived macroscopic coherence. It is shown that proposed approach provides new physical properties and methods for retrieval of signal light fields improvement basic parameters memory. demonstrate how coherence can enable storage with low noise programmable demand in atomic ensembles natural inhomogeneous broadening. The feasibility implementing this proposal various crystals doped rare earth ions, as well gases Raman transition...
We propose a scheme for creating of maximally entangled state comprising two field quanta. In our scheme, weak light fields, which are initially prepared in either coherent or polarization states, interact with composite medium near an interface between dielectric and negative index metamaterial. Such interaction leads to large Kerr nonlinearity, reduction the group velocity significant confinement fields while simultaneously avoiding amplitude losses incoming radiation. All these...
Microwave quantum memory promises advanced capabilities for noisy intermediate-scale superconducting computers. Existing approaches to microwave lack complete combination of high efficiency, long storage time, noiselessness and multi-qubit capacity. Here we report an efficient broadband multimode memory. The stores two spectral modes single photon level radiation in on-chip system eight coplanar resonators. Single mode shows a power efficiency up $60\pm 3\%$ at energy more than $73\pm higher...
We propose a new variant of the photon echo technique in solids, which can be used for realizing optical quantum memory submillimetre wavelength on level single-photon fields. The physical model proposed is theoretically analysed and possibilities its experimental realization are discussed.
We propose fast all-optical control of surface polaritons (SPs) by placing an electromagnetically induced transparency (EIT) medium at interface between two materials. EIT provides longitudinal compression and a slow group velocity while matching properties the materials strong transverse confinement. In particular we show that near dielectric negative-index metamaterial can establish tight confinement plus extreme slowing SPs, in both electric magnetic polarizations, simultaneously avoiding losses.
Recently, great progress has been made in the creation of a solid-state quantum computer using superconducting qubits on Cooper pairs charged electrons. However, this approach met limitations due to decoherence effects caused by strong Coulomb interaction qubit with environment. Here, we propose solution problem switching another Bose-Einstein condensate (BEC), uncharged long-lived magnons, wherein magnon BEC can be realized blockade isolating pair energy levels mesoscopic and nanoscopic...
A new scheme of photon echo based quantum memory in the optimal optical QED cavity with off-resonant Raman atomic transition is proposed. The employs ensembles characterized by an optically thin resonant and natural inhomogeneous broadening line composed arbitrary narrow homogeneous spectral components. provides robust quite simple coherent control light-atoms dynamics that can be implemented using existing technique opens a practical way for realization efficient long-lived multi-mode memory.
We examine a quantum memory scheme based on controllable dephasing of atomic coherence non-resonant, inhomogeneously broadened Raman transition. show that it generalizes the physical conditions for time-reversible interaction between light and ensembles from weak to strong fields linear non-linear interactions. also develop unified framework different realizations exploiting either controlled reversible inhomogeneous broadening or frequency combs, discuss new aspects related storage...
We performed high-resolution magneto-optical spectroscopy of the hyperfine transitions from $^{4}I_{15/2}$ to $^{4}I_{13/2}$ and $^{4}I_{9/2}$ multiplets $^{167}\mathrm{Er}^{3+}$ $^{166}\mathrm{Er}^{3+}$ in an isotopically purified $^{7}\mathrm{LiYF}_{4}$ crystal various external magnetic fields up 0.7 T. The obtained experimental results are interpreted framework generalized theoretical approach. derived model successfully explains all experimentally observed optical by using a single set...
An optical quantum memory protocol has been implemented on the basis of revival silenced echo at telecommunication wavelength for signal light fields with a small number photons. To this end, long-lived (>1 s) absorption line initialized and orthogonal geometry propagation rephasing chosen. efficiency (17 ± 1)% reached polarization components pulse storage time 60 μs. The input contains ~38 photons average, revived includes ~6 photons, signal-to-noise ratio is 1.3.
We propose a large low-loss cross-phase modulation between two coupled surface polaritons propagating through double electromagnetically induced transparency medium situated close to negative-index metamaterial. In particular, mutual $\ensuremath{\pi}$ phase shift is attainable the pulses at single-photon level.
In this paper we experimentally demonstrated a broadband microwave scheme suitable for the multiresonator quan- tum memory-interface. The consists of system composed mini-resonators strongly inter- acting with common resonator coupled external waveguide. We have implemented controllable tuning mini-resonator frequencies and coupling waveguide implementation impedance matched quantum storage. storage pulses an efficiency 16.3% has been shown at room temperature. possible properties proposed...
We demonstrate that a photon echo can be implemented by all-optical means using an array of on-chip high-finesse ring cavities whose parameters are chirped in such way as to support equidistant spectra cavity modes. When launched into system, classical or quantum optical signal—even single-photon field—becomes distributed between individual cavities, giving rise prominent coherence revivals at well-defined delay times, controlled the chirp parameters. This effect enables long storage times...
In this paper we present universal broadband multiresonator quantum memory based on the spatial-frequency combs of microresonators coupled with a common waveguide. We find Bragg-type impedance matching condition for coupling waveguide field that provides an efficient storage. The analytical solution obtained microresonator fields enables sustainable parametric control all characteristics. also construct experimental prototype studied in microwave spectral range demonstrates basic properties...
We report on a high-resolution optical and magneto-optical spectroscopy, luminescence, electron paramagnetic resonance (EPR) studies of yttrium orthophosphate single crystals doped with erbium, which are promising telecom-wavelength materials for applications in quantum electronics information processing. An observation the hyperfine structure spectra $^{167}\mathrm{Er}$ isotope ${\mathrm{Er}:\mathrm{YPO}}_{4}$ is presented. Energies symmetries 40 crystal-field levels ${\mathrm{Er}}^{3+}$...
We present a scheme of quantum repeater that uses entangled multimode coherent states are obtained by electro-optic modulation symmetric and antisymmetric Schr\"odinger cat states. Part the generated frequency modes is sent to beam splitter at central node, while remaining stored locally in memories. The between remote memories conditionally prepared photon-counting measurements output channels splitter. study how effects decoherence channel affect statistics photocounts and, for heralding...
We present a photon-echo quantum memory technique for manipulating states of photons interacting with an atomic gas medium. The offers vast potential the complete nonlocal-in-time multipulse reconstruction stored light as superposition echo fields, irradiated from medium at different moments time. Using this dynamic control is effectively possible by simply varying laser parameters.
The possibilities of recording, storage and reconstruction short single photon wave packets in the echo technique are analyzed. influence field medium parameters on quality precision quantum state is theoretically studied.