Svetlana Serdyukova
(JINR)
06/07/2017, 13:30
A detailed investigation of the IVC breakpoint and the breakpoint region width gives important information [1],[2] concerning the peculiarities of stacks with a finite number of intrinsic Josephson junctions. In [3] IVC for a stack of n Josephson junctions is defined numerically using the fourth- order Runge-
Kutta method. The current voltage characteristic has the shape of a Hysteresis loop....
Dr
Eugene Zima
(Physics and Computer Science Department, Wilfrid Laurier University, Waterloo, Canada)
06/07/2017, 13:45
For certain modular algorithms, the modulus need not be a prime, and implementers are left with more freedom to choose moduli. One suggestion, made by Knuth [3], is to use integers of the form A similar choice is Numbers of these forms are Cunningham numbers for the special case of the base We discuss suitability of these types of moduli for standard computer algebraic modular algorithms....
Dr
Alexander Gusev
(Laboratory of Information Technologies Joint Institute for Nuclear Research)
06/07/2017, 14:15
High-accuracy finite element method for elliptic boundary-value problems is presented.
The basis functions of finite elements are high-order polynomials, determined from a specially constructed set of values of the polynomials themselves, their partial derivatives, and their derivatives along the directions of the normals to the boundaries of finite elements.
Such a choice of the polynomials...
Sergue Vinitsky
(BLTP JINR)
06/07/2017, 14:30
High-accuracy finite element method for solving the 2D parametric elliptic self-adjoint boundary-value problems is presented. The triangular elements and new high-order fully symmetric Gaussian quadratures with positive weights, and no points are outside the triangle (PI type) is applied. The program calculates with the given accuracy the eigenvalues, the surface eigenfunctions and their...
Dr
Sergey Gutnik
(Moscow Institute of Physics and Technology)
06/07/2017, 14:45
The dynamics of a satellite in a circular orbit under the influence of gravitational and active damping torques, which are depend on the projections of the angular velocity of the satellite is investigated [1]. Such active damping torques are proportional to the projections of angular velocities onto the axes of the satellite body coordinate system and can be provided by using the angular...
Ms
Astghik Torosyan
(LTP)
06/07/2017, 15:45
We are considering the state space of two qubits formed from the X-states. Its decompositions with respect to two groups actions are studied. The first decomposition is constructed in accordance with the types of orbits of the invariance group G_X of X-state space. The second decomposition arises considering the action of the subgroup LG_X of invariance group G_X, the so-called “local group...
Ms
Elena Kuznetsova
(Institute of Problems of Chemical Physics of RAS), Mr
Ilya Lazarev
(MSU, Faculty of Fundamental Physical and Chemical Engineering)
06/07/2017, 16:00
E.I.Kuznetsova¹, I.D.Lazarev²˒¹
1Institute of Problems of Chemical Physics of RAS, Chernogolovaka, 142432,Moscow Region, Russia
2Lomonosov Moscow State University, Faculty of Fundamental Physical and Chemical Engineering, 119991, Moscow, Russia
We investigate quantum state transfer [1] and quantum entanglement [2], emerging in this process, in spin chains. We consider a quantum system,...
Mr
Vahagn Abgaryan
(JINR LTP)
06/07/2017, 16:15
According to the Stratonovich-Weyl correspondence there is mapping between
operators on the Hilbert space of a finite-dimensional quantum system and functions on the phase space of its classical mechanical counterpart. This map is given by the Wigner quasiprobability distribution and can be implemented with the aid of the Stratonovich–Weyl operator kernel which satisfies a number of lucid...
Mr
Georgii Bochkin
(Institute of Problems of Chemical Physics of RAS)
06/07/2017, 16:30
Quantum decoherence is one of the most important problems for creation of quantum devices which outperform their classical counterparts [1]. The performed investigations demonstrate [2] that the decoherence time decreases when the number of qubits in the coherent cluster increases.
We used methods of multiple-quantum (MQ) NMR [3] for the investigation of the decoherence processes in...
67.
Quantum correlations in remote state creation. Information exchange with vanishing entanglement.
Dr
Alexander Zenchuk
(Institute of Problems of Chemical Physics of RAS)
06/07/2017, 16:45
The formation and evolution of quantum correlations is one of the central problems of quantum information. Although quantum correlations are necessary to provide advantages of quantum information devices in comparison with their classical counterparts, the appropriate measure of these correlations is not well-established yet. Quantum entanglement [1] was considered as a suitable measure...
Ms
Tatiana Mihaescu
(Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Bucharest-Magurele, Romania)
06/07/2017, 17:00
Einstein-Podolsky-Rosen steerability of quantum states is a property that is different from entanglement and Bell nonlocality. We describe the time evolution of a recently introduced measure that quantifies steerability for arbitrary bipartite Gaussian states in a system consisting of two bosonic modes embedded in a common squeezed thermal environment.
We work in the framework of the theory...
