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Evgenii E. Narimanov

Publications and source records attributed to Evgenii E. Narimanov.

At least 19 recordsLinked to original sources
arXiv2026

Plasmon Gun: high-power mid-IR emission at a temporal interface

We propose a mechanism for the generation of intense ultrafast mid-infrared radiation from heavily doped semiconductors. An ultrafast optical pulse transfers a finite impulse to the free carriers, displacing the screening clouds surrounding ionized dopants and inducing coherent plasma-frequency oscillations of the resulting polarization. We derive an exact analytical solution for the corresponding nonequilibrium dynamics and the resulting far-field radiation emitted by a thin semiconductor film. For realistic parameters of heavily doped GaAs, the emitted mid-infrared pulses can reach electric-field amplitudes on the order of $10^7\,{\rm V/m}$ directly in the far field, without relying on optical focusing.

physics.optics↗
arXiv2026

Bright Emission from Dark Sources in Hyperbolic Media

Hyperbolic media enable ultra-strong light-matter interactions through their extreme field localization and small mode volumes, but low-loss realizations are fundamentally limited to the mid-infrared, owing to the long lifetimes of optical phonons in high-quality crystals. Here we show that bright emitters operating at visible or near-infrared frequencies can be used to generate radiation in this regime by inducing mid-infrared population dynamics, thereby creating a source in the hyperbolic frequency band without a corresponding dipole transition. We demonstrate that even a source with vanishing dipole and higher multipole moments - strictly non-radiating in any isotropic medium - becomes radiatively active in a hyperbolic environment. This enables visible and near-infrared control of light-matter interactions in polaritonic hyperbolic materials, establishing a new low-loss solid-state quantum optics platform.

physics.optics↗
arXiv2026

Second-Order Nonlinear Response in Centrosymmetric Hyperbolic Media

We show that centrosymmetric natural hyperbolic media such as hexagonal boron nitride exhibit a bulk second-order nonlinear response, leading to second-harmonic and sum- and difference-frequency generation with efficiencies comparable to those of established nonlinear optical crystals such as potassium dihydrogen phosphate.

physics.optics↗
arXiv2026

Carrier Drift Modulation and the Hyperbolic Time Crystals

We introduce the Carrier Drift Modulation - a new mechanism for creating temporal boundaries and enabling photonic time crystals. This approach opens a direct route to hyperbolic temporal metamaterials and, in particular, hyperbolic time crystals. We demonstrate that the very process responsible for time crystal formation can simultaneously compensate for intrinsic material losses in the supporting medium - overcoming one of the central challenges in nanophotonics. The realization of truly lossless hyperbolic media, long considered as one of the key challenges of nanophotonics, unlocks new possibilities for subwavelength light focusing, strong-field physics, and novel regimes of light-matter interaction. Crucially, the proposed approach can be implemented using existing materials and readily available light sources, making it both practical and transformative.

physics.optics↗
arXiv2025

Electromagnetic Hyper-Lift: optical nano-tweezers with hyperbolic materials

Optical tweezers, formed by tightly focused propagating laser beams, offer the unique capability to trap and control microscopic particles over a broad size range. However, the diffraction inherent to propagating optical fields, limits the resulting resolution and the accuracy of particle manipulation. Here we show that the phenomenon of ``auto-focusing'' inherent to hyperbolic materials in cylinder geometry, can be used for spatial control with nanometer accuracy. Furthermore, due to highly efficient light focusing in hyperbolic media that is not restricted by diffraction, the resulting electromagnetically induced forces exceed those of conventional optical tweezers by several orders of magnitude, which allows more efficient particle manipulation at reduced illumination intensity.

physics.optics↗
arXiv2024

Hyperbolic Quantum Processor

Achieving strong coherent interaction between qubits separated by large distances holds the key to many important developments in quantum technology, including new designs of quantum computers, new platforms for quantum simulations and implementation of large scale quantum optical networks. However, the inherent mismatch between the spatial dimensions of a quantum emitter and the photon wavelength fundamentally limits the transmission of quantum entanglement over long distances. Here we demonstrate, that long-range qubit entanglement can be readily achieved when qubit interactions are mediated by optical polariton waves in a hyperbolic material, due to the phenomenon of the Hyperbolic Super-Resonance. We show that in this regime the resulting quantum gate fidelity that exceeds 99%, can be achieved with the use of qubits based on well known deep donors in silicon when their interactions are mediated by polariton fields in the substrate formed by a hyperbolic material (such as e.g. hexagonal boron nitride. At the physical level the proposed system is essentially a silicon-based optoelectronic chip, and it's readily accessible to the existing methods of semiconductor nanofabrication, leading to the integration densities of well over 10^8. qubits/cm^2, and therefore opening the way to scalable and fault-tolerant error correction in quantum computation. Furthermore, we demonstrate that, due to the optical time scales that define the duration of the gate operation in the proposed system, and sub-nanosecond time of the decoherence in deep donors in silicon at the liquid nitrogen temperatures, the proposed Hyperbolic Quantum Processor does not require dilution refrigeration and therefore offers a pathway to bring quantum computation to the realm of conventional engineering.

quant-ph↗
arXiv2024

Electromagnetic Response for Modulation at Optical Time Scale

Rapid modulation of the electromagnetic response in both time and space creates temporal boundaries in the medium and leads to time-reflection and time-refraction of light and to the eventual formation of the photonic time crystal within the modulated optical material,, offering a new regime of light-matter interactions and a potential for practical applications, from non-resonant light amplification to tunable lasing. However, the conventional approach commonly used for the photonic time crystals and related phenomena that relies on the concept of effective time-dependent refractive index, is fundamentally unsuitable to this domain of ultra-fast modulation at optical time scales. We develop the appropriate theoretical description of the electromagnetic response and the resulting phenomena in this regime, and demonstrate not only quantitative but also qualitative differences from the conclusions obtained using the conventional approach.

physics.optics↗
arXiv2023

Ultrafast Optical Modulation by Virtual Interband Transitions

A new frontier in optics research has been opened by the recent developments in non-perturbative optical modulation in both time and space that creates temporal boundaries generating ``time-reflection'' and ``time-refraction'' of light in the medium. The resulting formation of a Photonic Time Crystal within the modulated optical material leads to a broad range new phenomena with a potential for practical applications, from non-resonant light amplification and tunable lasing, to the new regime of quantum light-matter interactions. However, the formation of the temporal boundary for light relies on optical modulation of the refractive index that is both strong and fast even on the time scale of a single optical cycle. Both of these two problems are extremely challenging even when addressed independently, leading to conflicting requirements for all existing methods of optical modulation. However, as we show in the present work, an alternative approach based on virtual interband transition excitation, solves this seemingly insurmountable problem. Being fundamentally dissipation-free, optical modulation by virtual excitation does not face the problem of heat accumulation and dissipation in the material, while the transient nature of the excited virtual population that modifies the material response only on the time scale of a single optical cycle, ensures that the resulting change in the refractive index is inherently ultrafast. Here we develop the theoretical description of the proposed modulation approach, and demonstrate that it can be readily implemented using already existing optical materials and technology.

physics.optics↗
arXiv2023

Insurgent Metamaterials: light transmission by forbidden transitions

We introduce the concept of the ``insurgent metamaterial'' -- which is a hyperbolic medium that contains quantum emitters with a forbidden optical transition. We show that the resulting electromagnetic response of the composite is dramatically different from that expected from the ``conventional'' hyperbolic medium, and discuss the experimental manifestations of the predicted effect.

physics.optics↗
arXiv2022

Ghost sensing: the rise and role of exceptional points in planar geometry

We show the recently discovered ghost waves - a special class of non-uniform electromagnetic waves in biaxial anisotropic media - can be used for optical sensing based on exceptional points. In addition to showing high sensitivity and precision, the proposed sensor employs simple planar geometry and is robust against noise.

physics.optics↗
arXiv2019

Ballistic Metamaterials

The interaction of free electrons with electromagnetic excitation is the fundamental mechanism responsible for ultra-strong confinement of light that, in turn, enables biosensing, near-field microscopy, optical cloaking, sub-wavelength focusing, and super-resolution imaging. These unique phenomena and functionalities critically rely on the negative permittivity of optical elements resulting from the free electrons. As result, progress in nanophotonics and nano-optics is often related to the development of new negative permittivity (plasmonic) media at the optical frequency of interest. Here we show that the essential mobility of free charge carriers in such conducting media dramatically alters the well-known optical response of free electron gases. We demonstrate that a ballistic resonance associated with the interplay of the time-periodic motion of the free electrons in the confines of a sub-wavelength scale nanostructure and the time periodic electromagnetic field leads to a dramatic enhancement of the electric polarization of the medium - to the point where a plasmonic response can be achieved in a composite material using only positive bulk permittivity components. This ballistic resonance opens the fields of plasmonics, nanophotonics, and metamaterials to many new constituent materials that until now were considered unsuitable for such applications, and extends the operational frequency range of existing materials to substantially shorter wavelengths. As a proof of concept, we experimentally demonstrate that ballistic resonance in all-semiconductor metamaterials results in strongly anisotropic (hyperbolic) response well above the plasma frequencies of the metamaterial components.

physics.optics↗
arXiv2018

Hyperbolic Blockade: Suppression of the Photonic Density of States and the Spontaneous Emission Rate at the Interface with Conducting Medium

Surface scattering of free electrons strongly modifies the electromagnetic response near the interface. Due to the inherent anisotropy of the surface scattering that necessarily reverses the normal the interface component of the electron velocity while its tangential component may remain the same, a thin layer near a high-quality interface shows strong dielectric anisotropy. The formation of the resulting hyperbolic dispersion layers near the metal-dielectric interface strongly modifies the local density of states, and leads to orders of magnitude changes in all associated phenomena.

physics.optics↗
arXiv2017

Hyper-Plasmonics: hyperbolic modes of a metal-dielectric interface

Plasmon resonance, with strong coupling of light to electrons at a metal-dielectric interface, allows light confinement and control at subwavelength scale. It's fundamentally limited by the inherent mobility of the electrons, leading to the corresponding non-locality of the electromagnetic response. We report that this non-locality also results in the formation of a hyperbolic layer near the metal-dielectric interface, with a strong anisotropy of its electromagnetic response. While the resulting "hyperbolic blockade" leads to the suppression of the conventional plasmon resonance, the hyperbolic layer also supports an entirely new class of surface waves, that offer longer propagation distance and stronger field confinement, simultaneously. Furthermore, these "hyper-plasmons" are not limited to the proximity of the plasmon resonance, which dramatically extends the operational bandwidth of plasmonic devices.

physics.optics↗
arXiv2016

Thermal radiation of Er doped dielectric crystals: Probing the range of applicability of the Kirchhoff law

The Kirchhoff law of thermal radiation, relating emissivity ε and absorptance α, has been originally formulated for opaque bodies in thermodynamic equilibrium with the environment. However, in many systems of practical importance, both assumptions are often not satisfied. In this work, we revisit the century-old law and examine the limits of its applicability in an example of Er:YAG and Er:YLF dielectric crystals, potential radiation converters for thermophotovoltaic applications. In our experiments, the (80 at.%) Er:YAG crystal was opaque between 1.45 μm and 1.64 μm. In this spectral range, its absorptance α(λ) is spectrally flat and differentiates from unity only by a small amount of reflection. The shape of the emissivity spectrum ε(λ) closely matches that of absorptance α(λ), suggesting that the Kirchhoff law can adequately describe thermal radiation of opaque bodies, even if the requirement of thermodynamic equilibrium is not satisfied. The(20 at.%) Er:YLF crystal had smaller size, lower concentration of Er ions, and it was not opaque. Nevertheless, its spectrum of emissivity ε(λ) had almost the same shape (between 1.45 μm and 1.62 μm) as the spectrum of absorptance α(λ) derived from the transmission measurements. This observation is in line with our prediction that the spectra of emissivity and absorptance should have identical shapes in optically thin slabs. We, thus, show that the Kirchhoff law of thermal radiation can be extended (with caution) even to not-opaque bodies away from the thermodynamic equilibrium.

physics.optics↗
arXiv2015

Enhanced spontaneous emission in photonic hypercrystals

We demonstrate a two-dimensional photonic hypercrystal that shows enhanced spontaneous emission from its metamaterial component and light extraction through its photonic crystal property. Spontaneous decay rate is enhanced by a factor of 19.5 and light extraction from the HMM is enhanced by a factor of ~100.

physics.optics↗
arXiv2015

Control of Förster energy transfer in vicinity of metallic surfaces and hyperbolic metamaterials

Optical cavities, plasmonic structures, photonic band crystals, interfaces, as well as, generally speaking, any photonic media with homogeneous or spatially inhomogeneous dielectric permittivity (including metamaterials) have local densities of photonic states, which are different from that in vacuum. These modified density of states environments are known to control both the rate and angular distribution of spontaneous emission. In the present study, we ask the question whether the proximity to metallic and metamaterial surfaces can affect other physical phenomena of fundamental and practical importance. We show that the same substrates and the same nonlocal dielectric environments that boost spontaneous emission, also inhibit Förster energy transfer between donor and acceptor molecules doped into a thin polymeric film. This finding correlates with the fact that in dielectric media, the rate of spontaneous emission is proportional to the index of refraction n, while the rate of the donor-acceptor energy transfer (in solid solutions with random distribution of acceptors) is proportional to n^-1.5. This heuristic correspondence suggests that other classical and quantum phenomena, which in regular dielectric media depend on n, can also be controlled with custom-tailored metamaterials, plasmonic structures, and cavities.

physics.optics↗
arXiv2014

Veselago lens by photonic hyper-crystals

An imaging system functioning as a Veselago lens has been proposed based on the novel concept of photonic "hyper-crystal" -- an artificial optical medium synthesizing the properties of hyperbolic materials and photonic crystals. This Veselago lens shows a nearly constant negative refractive index and substantially reduced image aberrations. It can find potential applications in photolithography and hot-spots detection of silicon-based integrated circuits.

physics.optics↗