306 research outputs found

    Large-scale multilayer architecture of single-atom arrays with individual addressability

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    We report on the realization of large-scale 3D multilayer configurations of planar arrays of individual neutral atoms with immediate applications in quantum science and technology: a microlens-generated Talbot optical lattice In this novel platform, the single-beam illumination of a microlens array constitutes a structurally robust and wavelength-universal method for the realization of 3D atom arrays with favourable scaling properties due to the inherent self-imaging of the focal structure. Thus, 3D scaling comes without the requirement of extra resources. We demonstrate the trapping and imaging of individual rubidium atoms and the in-plane assembly of defect-free single-atom arrays in several Talbot planes. We present interleaved lattices with dynamic position control and parallelized sub-lattice addressing of spin states

    Defect-free assembly of 2D clusters of more than 100 single-atom quantum systems

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    We demonstrate the defect-free assembly of versatile target patterns of up 111 neutral atoms, building on a 361-site subset of a micro-optical architecture that readily provides thousands of sites for single-atom quantum systems. By performing multiple assembly cycles in rapid succession, we drastically increase achievable structure sizes and success probabilities. We implement repeated target pattern reconstruction after atom loss and deterministic transport of partial atom clusters necessary for distributing entanglement in large-scale systems. This technique will propel assembled-atom architectures beyond the threshold of quantum advantage and into a regime with abundant applications in quantum sensing and metrology, Rydberg-state mediated quantum simulation, and error-corrected quantum computation

    Who is Doing What: The Impact of Task and Role Documentation on Outsourcing Service Quality

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    Our research contributes to the quest for management action items that drive outsourcing management success. We hypothesize and empirically show that a certain piece of IT governance, the explicit documentation of roles and responsibilities of staff residing in the client firm’s retained organization contributes to social alignment in terms of interaction quality, shared knowledge, and trust between the client firm’s business and side and the outsourcing vendor. Our model is quantitatively tested by using data from 171 IT outsourcing arrangements in the German banking industry. We show that the documentation of tasks and responsibilities affects the service quality delivered by the vendor in terms of reliability and responsiveness, and that this impact is fully mediated by both client-internal social alignment and vendor/client alignment. This result represents a piece for helping practitioners to develop a better understanding of how to design their outsourcing governance to maintain and improve ongoing outsourcing relationships

    The Role of Client-internal Social Linkages for Outsourcing Success – An SNA Approach

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    What is the role of a firm’s internal social relations between business departments and IT unit for the success of its IT outsourcing relationship? In this paper, we propose that the relationship between business and IT of a firm is crucial for achieving effective outsourcing management and for enabling the vendor to deliver the services as demanded. Since the business side of the client firm represents the users of the information systems but the IT unit represents the interface to the outsourcing vendor firm, interaction between both units is proposed to be required for maintaining a good outsourcing relationship. Based on a survey in the German Banking Industry and by adopting a Social Network Analysis Approach which captures the interaction structure within the client firm and thus represents an innovative scale to outsourcing research, we show that tight social linkages within the client firm lead to higher service quality achieved by the vendor firm

    Examining the Organizational Decision to Adopt Service-Oriented Architecture (SOA) - Development of a Research Model

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    What are the determinants of an organization’s decision to adopt Service-Oriented Architecture (SOA)? Although the paradigms of service orientation and SOA have become quite omnipresent in the IS literature, research is still lacking to provide a comprehensive view upon drivers and inhibitors of the organizational decision to adopt SOA. Based on the mature strand of adoption research, this paper develops a conceptual model in order to increase the understanding of the determinants influencing this decision. Thereby, the drivers and inhibitors are distinguished in organization-specific and innovation-specific factors. The organization-specific factors cover two aspects: (1) the compatibility of technology and organization (i.e., SOA expertise of the employees, management support for SOA, IT/ Business alignment, degree of process documentation) and (2) management fad and fashion. The innovation-specific factors cover the perceived benefits, perceived complexity, and standardization of available technologies related to SOA. Beside developing this theoretical model for laying the foundation for future empirical research, a further contribution of this paper is the development of a comprehensive measurement model for SOA adoption, which differentiates between the IT and the enterprise layer

    The Role of IT/Business Alignment for Achieving SOA Business Value - Proposing a Research Model

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    What is the interplay between IT/Business alignment and Service-oriented Architecture (SOA) regarding the achievement of business value in terms of business flexibility? This paper introduces a conceptual model that derives propositions about how IT/Business alignment, IT flexibility, and business flexibility are interrelated and how SOA and alignment interact in order to increase business flexibility. We apply and integrate well-known multi-dimensional concepts of both IT/Business alignment (in terms of strategic alignment, structural alignment, and social alignment) and IT flexibility (technical and non-technical IT flexibility) and map the conceptual components of SOA (architectural and the governance dimension) to this resulting model. This conceptualization will allow for more profoundly structured research on how SOA contributes to business value

    Employment, Utilization, and Development of Airborne Laser Scanning in Fenno-Scandinavian Archaeology-A Review

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    This paper gives a presentation of how airborne laser scanning (ALS) has been adopted in archaeology in the North over the period 2005-2019. Almost two decades have passed since ALS first emerged as a potential tool to add to the archaeologist's toolbox. Soon after, it attracted the attention of researchers within archaeological communities engaged with remote sensing in the Fenno-Scandinavian region. The first archaeological ALS projects gave immediate good results and led to further use, research, and development through new projects that followed various tracks. The bulk of the research and development focused on studying how well-suited ALS is for identifying, mapping, and documenting archaeological features in outfield land, mainly in forested areas. The poor situation in terms of lack of information on archaeological records in outfield areas has been challenging for research and especially for cultural heritage management for a long period of time. Consequently, an obvious direction was to study how ALS-based mapping of cultural features in forests could help to improve the survey situation. This led to various statistical analyses and studies covering research questions related to for instance effects on detection success of laser pulse density, and the size and shape of the targeted features. Substantial research has also been devoted to the development and assessment of semi-automatic detection of archaeological features based on the use of algorithms. This has been studied as an alternative approach to human desk-based visual analyses and interpretations of ALS data. This approach has considerable potential for detecting sites over large regions such as the vast roadless and unbuilt wilderness regions of northern Fennoscandia, and has proven highly successful. In addition, the current review presents how ALS has been employed for monitoring purposes and for landscape studies, including how it can influence landscape understanding. Finally, the most recent advance within ALS research and development has been discussed: testing of the use of drones for data acquisition. In conclusion, aspects related to the utilization of ALS in archaeological research and cultural heritage management are summarized and discussed, together with thoughts about future perspectives.Peer reviewe
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