Quantum network teleportation for quantum information distribution and concentration

We investigate the schemes of quantum network teleportation for quantum information distribution and concentration which are essential in quantum cloud computation and quantum internet. In those schemes, the cloud can send simultaneously identical unknown quantum states to clients located in different places by a network like teleportation with a prior shared multipartite entangled state resource. The cloud first perform the quantum operation, each client can recover their quantum state locally by using the classical information announced by the cloud about the measurement result. The number of clients can be beyond the number of identical quantum states intentionally being sent, this quantum network teleportation can make sure that the retrieved quantum state is optimal. Furthermore, we present a scheme to realize its reverse process, which concentrates the states from the clients to reconstruct the original state of the cloud. These schemes facilitate the quantum information distribution and concentration in quantum networks in the framework of quantum cloud computation. Potential applications in time synchronization are discussed.Comment: 7 pages, 1 figur

A new AgI complex based on 1-[(1H-benzimidazol-1-yl)meth­yl]-1H-1,2,4-triazole

In the title complex, bis­{μ-1-[(1H-benzimidazol-1-yl)meth­yl]-1H-1,2,4-triazole}disilver(I) dinitrate, [Ag2(C10H9N5)2](NO3)2, the AgI ion is nearly linearly coordinated [N—Ag—N angle is 155.72 (14)°] by two 1-[(1H-benzimidazole-1-yl)meth­yl]-1H-1,2,4-triazole (bmt) ligands. In addition, two bmt ligands link two AgI ions, forming a dinuclear unit with an Ag⋯Ag distance of 5.0179 (15) Å. The whole complex is generated by an inversion centre. The dinuclear units and the NO3 − counter-ions are connected by N—H⋯O hydrogen bonds and weak Ag⋯O inter­actions [2.831 (5), 2.887 (5) and 2.908 (5) Å], leading to a three-dimensional structure

The linear and nonlinear Jaynes-Cummings model for the multiphoton transition

With the Jaynes-Cummings model, we have studied the atom and light field quantum entanglement of multiphoton transition, and researched the effect of initial state superposition coefficient $C_{1}$, the transition photon number $N$, the quantum discord $\delta$ and the nonlinear coefficient $\chi$ on the quantum entanglement degrees. We have given the quantum entanglement degrees curves with time evolution, and obtained some results, which should have been used in quantum computing and quantum information.Comment: arXiv admin note: text overlap with arXiv:1404.0821, arXiv:1205.0979 by other author

catena-Poly[[(acetato-κ2 O,O′)(methanol-κO)cadmium(II)]-μ-[1,2-bis­(1H-benzimid­azol-2-yl)ethane]-κ2 N 3:N 3′-[(acetato-κ2 O,O′)(methanol-κO)cadmium(II)]-di-μ-chlorido]

In the title complex, [Cd2(CH3COO)2Cl2(C16H14N4)(CH3OH)2]n, the CdII atom is six-coordinated by one N atom from a centrosymmetric bridging 1,2-bis­(2,2′-1H-benzimidazol-2-yl)ethane (bbe) ligand, two O atoms from a chelating acetate ligand, one O atom from a methanol mol­ecule and two bridging Cl atoms in a distorted octa­hedral geometry. The CdII atoms are connected alternately by the Cl atoms and bbe ligands, leading to a chain along [001]. These chains are further linked by O—H⋯O hydrogen bonds. Intra­chain N—H⋯O hydrogen bonds are observed

4-(4-Chloro-5-methyl-3-trifluoro­meth­yl-1H-pyrazol-1-yl)-6-(prop-2-ynyl­oxy)pyrimidine

The molecule of the title compound, C12H8ClF3N4O, is twisted as indicated by the C—O—C—C torsion angle of 76.9 (3)°. Moreover, the trifluoro­methyl group shows rotational disorder of the F atoms, with site-occupancy factors of 0.653 (6) and 0.347 (6). The dihedral angle between the rings is 1.88 (12) Å