Serdecznie zapraszam pracowników i studentów WMiI na dwa odczyty wygłoszone przez profesorów uczelni rosyjskich o tematyce z pogranicza informatyki i fizyki.

Termin, miejsce i tytuły wykładów z abstraktami:

16 PAŹDZIERNIKA 2018 (WTOREK), AULA C0/1

godz. 11.00 - 12.00 (wykład i krótka dyskusja)
LEONID FEDICHKIN
«Quantum computers and quantum information processing»

godz. 12.00 - 13.00 (wykład i krótka dyskusja)
ANDREI NAUMOV
«Fluorescence nanoscopy of single molecules and quantum dots:
applications for far-field materials nanodiagnostics»

INFORMACJE O PRELEGENTACH I ABSTRAKTY WYKŁADÓW:

LEONID FEDICHKIN
Expert of Russian Academy of Sciences; Associate Professor at the Theoretical Physics Dept. of Moscow Institute of Physics and Technology; Vice Director for Science at NIX.
The elementary unit of quantum computer - quantum bit. Its resemblance
and difference from classical bit. Multiqubit quantum memory. The
supremacy of quantum information processing compared to classical one.
Quantum gates. The universal set of quantum gates.
Quantum circuits. Quantum algorithms. Deutsch's algorithm. Current state
of arts in quantum computation. Problems and perspectives.
«Quantum walks»
Classical walks. Quantum walks and their difference from classical
walks.
Example: controlled quantum walks of electrons in the system of
semiconductor quantum dots. Quantum walks under influence of external
noise. The transition of quantum evolution to classical dynamics with
noise level increase. The influence of noise to mixing time.

ANDREI NAUMOV
Professor of the Russian Academy of Sciences; Head of department, Institute for Spectroscopy of the RAS, Moscow, Troitsk, Russi; Head of Chair, Moscow State Pedagogical University, Moscow, Russia; Board Member of the Quantum Electronics and Optics Division of the European Physical Society

Spectroscopy and microscopy of single quantum emitters is a research
direction that has become by now one of the most topical issues in physics, physical chemistry, biophysics and related sciences. Detection of fluorescence images of single point emitters can give the source
coordinates with a subdiffraction (nanometer) accuracy. The reconstruction of the emitters’ coordinates is performed from the analysis of the point spread function (PSF). PSF can be modified to implement the super-resolution of all three coordinates using the adaptive optics elements. Restoration of coordinates for a statistically large number of single probe chromophores allows one to reconstruct the structure of the material under study with nanometer spatial resolution.
The possibilities of nanoscopy are expanded qualitatively with the
detection of spectral (photophysical) characteristics of probe emitters.
In these experiments, nanoscopy acquires extra "spectral coordinates",
which are individual spectral characteristics of nanoprobes, which makes
it possible to carry put a kind of "spectral nanotomography", revealing
different characteristics of the local structure and dynamics of the
sample.
Especially informative and the most sensitive to structural and dynamic
parameters of the nearby surrounding are the zero-phonon spectral lines
(ZPL) of single impurity organic molecules (SM). ZPLs are extremely
sensitive to static and dynamic local fields as well as guest-host
interactions.
This talk discusses the main techniques for detection of single point
emitters (chromophore organic molecules, semiconductor quantum dots),
temporal and spectral characteristics of SMs and QDs in different
environments, the blinking phenomenon, quenching and enhancement of the
luminescence of single emitters. There is a discussion of the nanoscopy
methods based on the reconstruction of coordinates of single probe
emitters, including - 3D-microscopy techniques with the instrumental PSF
modification. It is shown how the unique properties of the ZPL can become the basis for a new technique of "multicolor" far-field optical nanodiagnostics of solid media and nanostructures, where the reconstruction of the image is carried out by registering the of the ZPL-fluorescence images and by restoring the coordinates of a large number of probe SMs with nm-accuracy.

Z wyrazami szacunku
Jan Jakóbowski
Dziekan WMiI