A proposal for an optical implementation of a universal quantum phase gate

Large optical nonlinearities occurring in a coherently prepared atomic system are shown to produce phase shifts of order pi. Such an effect may be observed in ultracold rubidium atoms where it could be feasibly exploited toward the realization of a polarization phase gate

Scheme for a quantum phase gate based on electromagnetic induced transparency

We present a scheme for the experimental realization of a quantum phase gate acting on the polarization degree of freedom of traveling single photon wave-packets. The scheme exploits the giant Kerr nonlinearities that can be achieved in dense atomic media showing electromagnetically induced transparency, and it may be useful in a variety of quantum communication schemes

Digital Reconstruction of Demolished Architectural Masterpieces, 3D Modeling, and Animation: The Case Study of Turin Horse Racing by Mollino

his chapter reviews methods and techniques of digital reconstruction of disappeared architectural masterpieces. Through the overview of theoretical positions are explored heuristic values and communicative potentials of three-dimensional reconstruction, and prerogatives of animation in the interaction with three-dimensional data. Different critical approaches related to the architectures remained on paper are then brought to light. The examination of several case studies, also personally conducted, is extended to unbuilt architectures and minor architectures subject to demolition or transformation in order to highlight the different strategies used for the preservation of the memory of such heritage. Finally, the case study of Turin Horse-Racing Society Building by Carlo Mollino is extensively presented through the analysis of contemporary critical bibliography concerning the project, a description of archival sources and illustration of methods and techniques of the digital reconstruction