Ivan Yu Eremchev

Ivan Yu Eremchev
Russian Academy of Sciences | RAS · Institute of Spectroscopy

PhD

About

61
Publications
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356
Citations

Publications

Publications (61)
Article
Fluorescence imaging of single quantum light emitters (atoms, molecules, quantum dots, color centers in crystals) is an inherent experimental problem of modern photonics and its numerous applications. In these measurements, highly sensitive cameras are of the key significance. Recent progress in technologies of charge-coupling devices (CCD) and com...
Article
Full-text available
Antibunching effect is typically observed in individual systems possessing photoluminescence (PL) blinking and vice versa. Contrary to this common perception, absence of antibunching in strongly blinking methyl ammonium led tri‐iodide (MAPbI3) perovskite crystals of sizes from tens to hundreds of nanometers regardless of the excitation power densit...
Article
Full-text available
We report the discovery of a GeV-associated phenomenon which is strong (up to an order) stochastic reversible enhancements of photoluminescence intensity in a single GeV diamond synthesized with the high-pressure, high-temperature technique. We were lucky to observe this effect with only one crystal among dozens of similar microdiamonds. Each rise...
Article
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A way of improving the energy efficiency of diffraction optical elements (DOEs) that form two-lobe light fields whose intensity distribution rotates in propagation is studied. Such DOEs find application in ultrahigh resolution microscopy to modify the spread function of a point light source via phase spatial light beam modulation, allowing all thre...
Article
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Luminescence spectroscopy experiments were realized for single colloidal quantum dots CdSe/ZnS in a broad temperature range above room temperature in a nitrogen atmosphere. Broadening and shifts of spectra due to the temperature change as well as due to spectral diffusion processes were detected and analyzed. A linear correlation between the positi...
Article
Full-text available
The possibility of direct observation of a quasi-localized elementary excitation of the phonon type in polyisobutylene has been demonstrated by detecting the fluorescence excitation spectrum of a Mg‑tetrazaporphyrin single probe molecule in a wide spectral range at a temperature of 6 K. The parameters of the quasilocalized low-frequency vibrational...
Preprint
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A new model of single quantum dot (QD) spectral diffusion based on variations of the electron-phonon coupling strength was introduced. It was applied successfully to describe intriguing effect of the correlation between the positions of the maxima and the widths of single QDs luminescence spectra. The model was able to describe the linear dependenc...
Article
We have used fluorescence nanoscopy for direct imaging of adsorption of individual colloidal quantum dots of diameter ~10 nm (spherical core/shell CdSeS/ZnS semiconductor nanocrystals, functionalized by organic oleic acid ligands) in nanopores of a nuclear filter (a polypropylene track membrane with pores of diameter ~500 nm). We have shown that wh...
Article
The processing of images of point-like fluorescing objects, obtained by a matrix detector in the scheme of a luminescent microscope, is considered. Analysis of model images with parameters close to experimental images of flickering single CdSe/ZnS quantum dots is presented. A scheme for obtaining information on fluctuations in fluorescence intensit...
Article
A technique for image processing and the localization (tracking) of fluorescent nanoparticles is developed on the basis of the Hough transform. Features of data analysis in the Hough parametric space that are due to the need to display the coordinates of single point emitters in 3D space are discussed. Examples are given of tracking single point em...
Article
The possibility of determining the distance between two closely spaced blinking single colloidal quantum dots using super-resolution far-field luminescence microscopy is considered. Numerical simulation of microscope images of a single pair of point light emitters is performed for different modes of luminescence blinking observed in experiments wit...
Article
Full-text available
Zero-phonon spectral lines of single Mg-tetraazaporphyrin molecules in a polymer matrix and their spectral trails are recorded using cryogenic fluorescence nanoscopy at a temperature of 6 K. Spectral diffusion (stochastic jumps of zero-phonon lines) in an anomalously wide spectral range up to several tens of inverse centimeters is revealed. The str...
Article
Full-text available
The question of the axial coordinate determination accuracy is quite sophisticated in far field 3D fluorescence nanoscopy. The accuracy of a point emitter axial coordinate reconstruction depends among other things on the conversion efficiency of the phase mask and the microscope objective instrumental function. It was found that the instrumental fu...
Article
Full-text available
We propose a theoretical explanation of spontaneous transitions between dim and bright fluorescence intensity states observed experimentally in a microcrystal of diamond with germanium-vacancy colour centres driven by a continuous wave laser. We use a generalized system of optical Maxwell-Bloch equations derived for an emitter in an ensemble of mot...
Article
Full-text available
The results of low-temperature measurements of spectral trails (temporal evolutions of individual fluorescence excitation spectra) of single molecules Mg-tetraazaporphyrin embedded in polyisobutylene are presented. Spectral trails were recorded in a broad spectral range (up to 4000 GHz) at a temperature 6K. Spectral diffusion in a broad spectral ra...
Article
Full-text available
Here we present investigation of the thin film with CdSe nanocrystals with the size 2.3 nm made from low-concentration toluene solution. Using fluorescent microscopy method we have found small nanocrystals ensembles up to single nanocrystals. Luminescence spectra in different parts of the test sample were registered. Analysing them we can draw a co...
Article
Full-text available
The temporal evolution of fluorescence intensity of a single blinking CdSe/ZnS nanocrystal (quantum dot, QD) has been measured with continuous wave (CW) laser excitation at room temperature. Tracks exhibit ON-/OFF-fluctuations with large amplitude and intensity fluctuations with small amplitude in the ON-interval. The QD photon distribution functio...
Article
Full-text available
Most experimental observations of physical processes are naturally accompanied by " blind " (" dead ") times, which in principle can distort the result of measurements. Here we analyze how the presence of blind times in measurements changes the measured statistics of blinking fluorescence of single quantum dots. We show that information can be extr...
Article
Full-text available
In this research a relation between the accuracy of restoration of the single quantum dots (QD) CdSe/CdS/ZnS cross-cut coordinates and luminescence intensity was investigated. It was shown that the limit of the accuracy of determining the coordinates of a single QD for a considerable total amount of registered photons approaches its limiting value...
Article
Full-text available
In our work, we demonstrate the advantages and drawbacks of the methods for generating nonclassical light using single luminescent molecules in solid matrices at cryogenic temperatures when excitation of zero-phonon spectral lines is possible. It is shown that for certain impurity-matrix systems it is possible to guarantee the following: single-pho...
Article
Full-text available
In the present work the individual temperature dependences of zero-phonon spectral line widths of single tetra-tert-butylterrylene dye-molecules in polyisobutylene were measured in a broad range of low temperatures (from 20 K up to 67 K). The obtained data show the broad distribution of single molecule zero-phonon spectral line widths measured at t...
Article
Full-text available
Luminescence spectra of the colloidal solution of CdSe quantum dots (in toluene) were studied in a wide range of low temperatures. Samples were synthesized in the liquid crystal matrix of cadmium octanoate (CdC8). A comparative analysis of the obtained data with previous results was performed.
Article
Full-text available
In this Colloquium, we discuss the main principles, achievements and perspectives in the field of highly parallel luminescence spectroscopy and imaging of single molecules (SM) in transparent solids. Special attention will be given to SM detection at low temperatures, where ultranarrow and bright zero-phonon lines (ZPL) of emitting centres are achi...
Article
Full-text available
Fluorescence of single molecular pairs involved in Förster Resonance Energy Transfer (FRET) is considered. Cases when either a donor of the electronic excitation energy or its acceptor has a non-fluorescent "dark" state are described. The influence of such dark states on energy transfer efficiency is analytically studied. Statistics for the number...
Article
Full-text available
This paper presents the technique and results of the investigation of the structural relaxation in disordered solid media (polyisobutylene, toluene, ortho-dichlorobenzene) at temperatures below the glass transition point via the spectra and fluorescence images of single impurity fluorescent molecules (terrylene, tetra-tert-butylterrylene). Applicat...
Article
Full-text available
Luminescence imaging has been adapted to facilitate alignment and focusing of multiple non-collinear laser beams in pump–probe experiments. The technique has been validated in an experiment on four-wave mixing in a doped polymer placed into a high-pressure sapphire-anvil cell, itself inside an optical cryostat.
Article
Full-text available
The use of techniques for analyzing the fluorescence photon statistics of a single molecule for modeling single-emitter dynamics is demonstrated. The photon distribution function measured in the fluorescence of a single tetra-tert-butylterrylene molecule embedded in polyisobutylene is used to devise a theoretical model for single emitters with comp...
Article
Full-text available
Numerous experiments have shown that the low-temperature dynamics of a wide variety of disordered solids is qualitatively universal. However, most of these results were obtained with ensemble-averaging techniques which hide the local parameters of the dynamic processes. We used single-molecule (SM) spectroscopy for direct observation of the dynamic...
Conference Paper
Structural relaxation processes in disordered solids on the length scale of nanometers have been studied in a broad temperature range, from 4.5 K up to the glass transition, with single-molecule spectroscopy and thermal cycling experiments. Irreversible changes of single-molecule spectra after thermal cycles were observed and attributed to relaxati...
Article
Numerous experiments have shown that the low-temperature dynamics of a wide variety of disordered solids is qualitatively universal. However, most of these results were obtained with ensemble-averaging techniques which hide the local parameters of the dynamic processes. We used single-molecule (SM) spectroscopy for direct observation of the dynamic...
Article
The cover picture shows structural formulae of crystalline ortho-dichlorobenzene doped with terrylene and an example of a single-molecule fluorescence excitation spectrum. This system reveals huge fluorescence emission rates, extraordinary spectral stability, absence of blinking, and a broad inhomogeneous distribution. As shown by A. V. Naumov et a...
Article
The study of a new dye-matrix system-quickly frozen ortho-dichlorobenzene weakly doped with terrylene--via single-molecule (SM) spectroscopy is presented. The spectral and photo-physical properties, dynamics, and temperature broadening of SM spectra at low temperatures are discussed. The data reveal a broad inhomogeneous distribution, which indicat...
Article
This work is devoted to the study of a key question of impurity-center spectroscopy: the influence of probe molecules on the local dynamics of the matrix. The main idea of our studies was to compare, on the single-molecule level, the spectral dynamics of an amorphous matrix (polyisobutylene (PIB)) as measured with different dopants (tetra-tert-buty...
Article
Full-text available
The influence of impurity chromophore molecules--tetra-tert-butylterrylene (TBT) and dibenzo-anthanthrene (DBATT)--on the vibrational dynamics of the amorphous polymer polyisobutylene (PIB) has been studied via single-molecule spectroscopy. The measurements were performed in the temperature region of 7-30 K, where the interaction of the chromophore...
Conference Paper
The dynamics in several low-molecular-weight glasses and in amorphous polyisobutylene of different molecular weights is investigated with single-molecule spectroscopy at temperatures of 4.5 and 7 K. Surprisingly, only the polymers with long chain lengths follow the prediction of the standard tunneling model and feature spectral jumps of the single-...

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Project (1)
Project
HBSM’2018 is organized by the Institute of Spectroscopy of the Russian Academy of Sciences (Troitsk, Moscow) in collaboration with the Moscow State Pedagogical University. The conference venue will be in the heart of the ancient Russian city of Suzdal, known as one of the best places that illustratively and vividly tell about the centuries of eventful and dramatic history of this land and its peoples. Laser selective spectroscopy has a special meaning for Russia. In 1952 the staff of the Department of Theoretical Physics of the Moscow State Pedagogical Institute under the direction of Prof. Eduard Shpol’sky was the first to observe the emergence of quasi-linear spectra of complex organic compounds in specially selected solvents at low cryogenic temperatures known as Shpolskii matrices. In 1972, a former student of Shpol’sky, Prof. Roman Personov and his colleagues at the Institute of Spectroscopy of the USSR Academy of Sciences have successfully performed a selective laser excitation of luminescence of organic molecules. Then, in 1974, researchers from Personov’s group and their colleagues from the Institute of Physics in Tartu, Estonia (USSR) conducted fundamental experiments on the persistent spectral hole burning. This work has formed the basis of laser site-selective spectroscopy of molecules, which has reached its culmination in single-molecule spectroscopy. HBSM was started in 1987 in Tallin, Estonia (USSR) as “All-Union Symposium on Modern Methods of Laser Spectroscopy of Molecules in Low-Temperature Media”. The next meetings were “Persistent Spectral Hole Burning: Science and Applications” in Monterey (California, USA, 1991) and “Spectral Hole Burning and Luminescence Line Narrowing: Science and Applications” in Ascona (Switzerland, 1992). The following meetings were organized as “International conferences on Hole-Burning and Related Spectroscopies (HBRS): Science and Applications” in Tokyo (Japan, 1994), Brainerd (Minnesota, USA, 1996) and Hourtin (France, 1999). In 2001, the Conference received its current name “Hole Burning, Single Molecule, and Related Spectroscopies (HBSM): Science and Applications”. The HBSM meetings were held in Taipei (Taiwan, 2001), Bozeman (Montana, USA, 2003), Aussois (France, 2006), Palm Cove (Australia, 2009), Tübingen (Germany, 2012) and Tartu (Estonia, 2015). This conference series has been exceptionally successful in bringing together participants from the leading research teams around the world to discuss the latest developments in the fundamental science and the applications of site-selective and single-molecule spectroscopy and related topics. We are looking forward to seeing you in Suzdal!