We calculate the Wigner quasiprobability distribution function of quantum elliptical vortex in elliptical beam (EEV), produced by coupling squeezed coherent states of two modes. The coupling between the two modes is performed by using beam splitter (BS) or a dual channel directional coupler (DCDC). The quantum interference due to the coupling between the two modes promises the generation of controlled entanglement for quantum computation and quantum tomography.
The negativity of the Wigner function is discussed as a measure of the non classicality and the quantum interference pattern obtained therein as a possible measure of the entanglement between the two modes of the vortex states. This measure of entanglement is compared with the results obtained from concurrence.
We calculate the entanglement of a generalized elliptical vortex formed by quantized radiation field, using Wigner quasiprobability distribution function for such states. We find a critical squeezing parameter above which the entanglement is less for higher vorticity, which is counter intuitive.
The influence of colonial (British) rule on native (Indian) culture and vice versa has resulted in the development of ‘hybrid’ architectural styles, which are seen in the external ‘form’ of the buildings. The development of a hybrid style is an important phase in the evolution of domestic architecture in India. In this paper we explore whether such hybrid nature is also reflected in the spatial organizations of some colonial houses of eastern India. For this, a suitable methodology was evolved to analyze the spatial organizations. The compositional rules in the generation of spatial layout in these houses are analyzed through the use of space syntax analysis, with some modifications, in order to type them spatially. Typically, space syntax analysis deciphers the spatial organization by the formation of ‘inequality genotypes’, which describe only the integration (and segregation) of spaces as per the access relations. To understand more about the Indian social and cultural norms that might have influenced the spatial organizations of the houses, the accessibility, adjacency, and orientation of the spaces also need to be studied. In this paper we explain the methodology used to generate ‘genotype strings’, incorporate the aforementioned information, and help to understand and document the ingrained social and cultural factors in spatial organizations of the houses more explicitly.
In this article we introduce a novel quantum state, the perfect quantum
optical vortex state which exhibits a highly localised distribution along a
ring in the quadrature space. We examine its nonclassical properties using the
Wigner function and the negativity volume. Such a quantum state can be a useful
resource for quantum information processing and communication.Comment: 6 pages, 5 figure
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