We propose a new protocol for implementing the two-qubit photonic phase gate. In our approach, the π phase is acquired by mapping two single photons into atomic excitations with fermionic character and exchanging their positions. The fermionic excitations are realized as spin waves in a spin chain, while photon storage techniques provide the interface between the photons and the spin waves. Pos...

In the title compound, C(20)H(29)N(5)O(4), the pyridine ring makes a dihedral angle of 10.41 (16)° with the triazole ring, which exhibits an azo-like character. In the crystal, mol-ecules are linked by C-H⋯O and C-H⋯N hydrogen bonds, and C-H⋯π inter-actions involving a methyl group and the pyridine ring of a neighbouring mol-ecule, leading to the formation of a three-dimensional network.

Calculations typically performed on a calculator or computer show the result as decimal fraction if it is not an integer. It would be easier to interpret value could expressed with integers and operations, such root subtraction operation. This article shows how this can done developed algorithm in Microsoft Excel, which recognizes most famous irrational numbers displays them text form together ...