Flow through nanotube has many interesting peculiarities. To describe these unusual properties we suggest a model of   the flow based on crystallite liquid theory. Slip boundary condition is used instead of conventional no-slip condition.   The condition is derived by consideration of interaction of flow particles with the nanotube wall potential in the   framework of quantum mechanics. For nanotube with elastic walls another mechanism of flow plays an important   role. Namely, a model of flow caused by elastic soliton wave in its wall is suggested. As for general consideration,   a modification of the Navier-Stokes equations for the nanotube flow is derived from many-particle Hamiltonian in   the framework of quantum statistical physics. Particularly, for a model confinement the effective viscosity of the   nanotube flow is got. The obtained dependence of the viscosity on the nanotube diameter is in good correlation with   the corresponding experimental results. 

The heat conductivity of nanofluids based on aluminum oxide nanoparticles (mean diameter of 13 nm) have been measured experimentally. Glycol and isopropyl alcohol as the based fluids were used. The non stationary “hot wire” method has been used. It was shown the heat conductivity at low volume concentration of nanoparticles (<0,5 %) corresponds to classical Maxwell theory. For higher volume concentration of nanoparticles in glycol the heat conductivity deviated to low side due to aggregate instability of the nanofluid. The anomalous growth of heat conductivity in isopropyl alcohol have been observed. The possible nature of the observed phenomenon is discussed in conclusion.

The dynamics of the interaction of electromagnetic pulses in a medium with impurity two-level atoms. Using the kinetic equation for the mean values of pseudospin operators, and decay in the random phase approximation. A numerical study of the conditions of formation of bound states of optical pulses and shows the evolution of the system for different parameters of the problem. The analogy between the results obtained and the well-known soliton modes.

In the functional integration formalism and the influence functional approach we derive formulas, describing the evolution of the statistical density matrix of nanosystems in different representation. We find the explicit form of the quantized electromagnetic field influence functional. We present examples, which agree with the calculations in the framework of perturbation theory.

A nonlinear model of DNA dynamics with coupling between conformational dynamics and proton tunneling is presented. It is demonstrated that terahertz radiation can influence both vibrational excitations and proton motion in DNA hydrogen bonds. The irradiation at the edge of far IR spectral range can promote proton tunneling. If the radiation frequency matches the vibrational mode, the generation of localized excitations in form of dissipative solitons is possible. These solitons decrease the probability of proton tunneling.

We discuss the influence of the optical nanomaterial medium on the character of interaction of atoms with their own radiation field on the example of photonic crystals. It is shown that such effects may lead to changes of energy levels of atoms placed in a periodic dielectric medium of nanometer size.

The high harmonic generation on superlattices based on graphene under the influence of а variable and a uniform electric fields is considered. Intensities vectors of these fields are directed along superlattices axis. The electron system superlattices based on graphene is considered using the kinetic Boltzman equation with a constant relaxation time. The dependence of the amplitude of the high harmonic from fields characteristics is investigated.

Possibility of management is shown by time of occurrence of the response of the Shtarkovsky echo at change of mutual orientation external electric fields gradients of. It is found that at various corners between gradients of external non-uniform electric fields shift of time of occurrence of the Shtarkovsky echo is observed.

A new interatomic potential for metals based on the embedded atom method is proposed in this paper. Some approximation of electron density distribution is suggested from the basic principles of quantum mechanics. The form of this distribution defines not only the pair potential but also the particular form of embedding energy function. To describe various metal properties one should choose only two parameters of the electron density distribution. The parameters are determined empirically by fitting to the equilibrium lattice constant, sublimation energy, vacancy formation energy and elastic constants. Potential parameters for Al(fcc), Fe(bcc) and Mg(hcp) are presented. Potential is expressed by simple functions and can be used in molecular dynamics simulations of large atomic systems.

In this article we take into consideration time dynamics of a field density matrix in basis of conditions of vacuum and two orthogonal polarization photons. The analysis was performed using the device with passive modulation of distributed photons conditions and additional unexcited modes. Errors in the sifted key can appear due to the absorption and depolarization of photons, as well as from the optical fibre (ОВ) parameters disorder. We find the average relative error (QBER) for variation of OB parameters in the sifted quantum key using BB84 protocol distribution with polarizing coding of the information. It is possible to reduce QBER significantly, even when random ОВ parameters are widely dispersed. For identifying the protocol working conditions at large distances we use the polarizing palpation effect, most clearly expressed when average value of OB parameters surpass their variation. In conclusion, the correct choice of OB manufacturing technology will lower QBER to the critical level of 0.11, below which the distributed key can be applied for cryptographical purposes.

The descreet photodetection process is under investigation. It is assumed to be nonideal due to the possibility of appearing "dark" and "bright" clicks of ionization chamber, which measures the atom state. The nonorthogonal POVM measures and Kraus extension on the field states space are proposed.

The correlation of the inhomogeneous broadening in different frequencytransitions in three-tier system of nano-gate and its impact on the intensity of the response of the stimulated photon echo investigated. It is shown that the correlation coefficient of inhomogeneous broadening on two different transitions and the intensity of the response of the stimulated photon echo depends on the parameter of the random interaction of the optical electron with the local field and the width of the distribution of additional frequency shifts due to partial mutual fixation of the transition energies.  Moreover, a slight change in the coefficient of correlation leads to a significant decline in the intensity of the response.

Encoding of information in the nano-time intervals between the exciting laser pulses in optical echo processor was considered.  Information measure to describe the transformation of classical in quantum information was introduced. When converting classical information stored in the nano-time intervals tier laser pulses in a quantum, the most appropriate measure is the quantum information measure based on algorithmic information theory as it has the highest correlation with the classical information measure.

We consider propagation and interaction the extremely short pulses in ferroelectric media possessing both the nonlinearities of the third and fifth orders. Using to the analytic expressions found previously, the stability of the stationary pulses to additive modulation and interpulse collisions is demonstrated by numerical simulation. The stability of electromagnetic domain is proved regarding the interaction to the incident solitary wave.

We have studied sub-Doppler laser cooling of thulium atoms in a magneto-optical trap (MOT) operated at 410.6 nm. Without any additional sub-Doppler cooling cycles the sub-Doppler temperature of 25(5) microK have been achieved (the number of atoms was 3 x 10⁶). This temperature is one order of magnitude lower than the Doppler limit for used transition (240 microK). The high efficiency of sub-Doppler cooling is accounted for by equality of Lande g-factors of high and lower levels of cooling transition. We have implemented trapping of ultracold thulium atoms in a magnetic trap (MT) formed by a MOT quadruple magnetic field (field gradient is about 20 G/cm). Loading of MT has been performed from the cloud contained thulim atoms previously cooled in the MOT down to the sub-Doppler temperature of 80 microK. About atom have been trapped in MT at the temperature 40 microK. By analysing MTpopulation decay process the lifetime has been determined (0.5 s) and the constrain on the rate constant of inelastic binary collision of spin-polarized thulim atoms in the ground state (cms) has been imposed.