The production of quantum states required for use in quantum protocols & technologies is studied by developing the tools to re-engineer a perfect state transfer spin chain so that a separable input excitation is output over multiple sites. We concentrate in particular on cases where the excitation is superposed over a small subset of the qubits on the spin chain, known as fractional revivals, d...

We study continuous-time quantum walks on normal Cayley graphs of certain non-abelian groups called extraspecial groups. By applying general results for in association schemes we determine the precise conditions perfect state transfer and fractional revival. Using partial spreads, construct 2-groups that admit these phenomena. also show there is no graph an group admits instantaneous uniform mi...

In this commentary, we endorse concerns about the health impact of the trans-pacific partnership (TPP), paying particular attention to its mechanisms for investor state dispute settlement. We then describe the different, judgeled approach being advocated by the European Commission team negotiating the Trans-Atlantic Trade and Investment Partnership, arguing that, while not perfect, it offers si...

In this work, we study transfer of coherence matrices along spin-1/2 chains various length. Unlike higher order matrices, zero-order matrix can be perfectly transferred if its elements are properly fixed. certain cases, to provide the perfect transfer, an extended receiver together with optimized unitary transformation has included into protocol.In asymptotic transferable for infinitely long ch...

Given two graphs $$G_{1}$$ of order $$n_{1}$$ and $$G_{2}$$ , the neighborhood corona denoted by $$G_{1}\bigstar G_{2}$$ is graph obtained taking one copy copies in meanwhile, linking all neighbors i-th vertex with vertices . In our work, we give some conditions that not periodic. Furthermore, demonstrate sufficient for having no perfect state transfer. Some examples are provided to explain res...

Spin chains are paradigmatic systems for the studies of quantum phases and phase transitions, and for quantum information applications, including quantum computation and short-distance quantum communication. Here we propose and analyse a scheme for conditional state transfer in a Heisenberg XXZ spin chain which realizes a quantum spin transistor. In our scheme, the absence or presence of a cont...

A generalization of the dictionary data structure is described, called tuple dictionary. A tuple dictionary represents the mapping of n-tuples of strings to some value. This data structure is motivated by practical applications in speech and language processing, in which very large instances of tuple dictionaries are used to represent language models. A technique for compact representation of t...

The present study examines the behavior of a classical charged point particle in near-elliptic orbits about an infinitely massive and oppositely charged nucleus, while acted upon by applied electromagnetic radiation. As recently shown for near-circular orbits, and now extended here to the elliptical case, rather surprising nonlinear dynamical effects are readily produced for this simple system....

Channel estimation is an important technique at receiver’s end in order to combat the effect of noise or interference on the transmitted information. The channel estimation reduces the effect of the channel on signal and recovers the transmitted signal. These estimation techniques depend on the propagation model through which it is travelling. Estimation techniques LS, MMSE, PERFECT performs di...

It is shown how choices based on the $q$-Racah polynomials for masses and spring constants along a chain give new systems that exactly allow dispersionless end-to-end transmission of pulse as well periodic splitting initial momentum between first last mass. This ``Newton's cradle'' provides classical analog quantum spin devices exhibit perfect state transfer fractional revival.