Search results for "Merging"
showing 10 items of 649 documents
Cavity optomechanics mediated by a quantum two-level system
2015
Coupling electromagnetic waves in a cavity and mechanical vibrations via the radiation pressure of photons is a promising platform for investigations of quantum–mechanical properties of motion. A drawback is that the effect of one photon tends to be tiny, and hence one of the pressing challenges is to substantially increase the interaction strength. A novel scenario is to introduce into the setup a quantum two-level system (qubit), which, besides strengthening the coupling, allows for rich physics via strongly enhanced nonlinearities. Here we present a design of cavity optomechanics in the microwave frequency regime involving a Josephson junction qubit. We demonstrate boosting of the radiat…
Dephasing due to quasiparticle tunneling in fluxonium qubits: a phenomenological approach
2015
The fluxonium qubit has arisen as one of the most promising candidate devices for implementing quantum information in superconducting devices, since it is both insensitive to charge noise (like flux qubits) and insensitive to flux noise (like charge qubits). Here, we investigate the stability of the quantum information to quasiparticle tunneling through a Josephson junction. Microscopically, this dephasing is due to the dependence of the quasiparticle transmission probability on the qubit state. We argue that on a phenomenological level the dephasing mechanism can be understood as originating from heat currents, which are flowing in the device due to possible effective temperature gradients…
Interaction-free measurements with superconducting qubits
2008
An interaction-free measurement protocol is described for a quantum circuit consisting of a superconducting qubit and a read-out Josephson junction. By measuring the state of the qubit one can ascertain the presence of a current pulse through the circuit at a previous time without any energy exchange between the qubit and the pulse.
Induced unconventional superconductivity on the surface states of Bi2Te3 topological insulator
2017
Topological superconductivity is central to a variety of novel phenomena involving the interplay between topologically ordered phases and broken-symmetry states. The key ingredient is an unconventional order parameter, with an orbital component containing a chiral $p_x$ + i$p_y$ wave term. Here we present phase-sensitive measurements, based on the quantum interference in nanoscale Josephson junctions, realized by using Bi$_2$Te$_3$ topological insulator. We demonstrate that the induced superconductivity is unconventional and consistent with a sign-changing order parameter, such as a chiral $p_x$ + i$p_y$ component. The magnetic field pattern of the junctions shows a dip at zero externally a…
Uncertainties and Risks in the Implementation of an E-Learning Information Systems Project in a Higher-Learning Environment: Viewpoints from Estonia
2005
This paper investigates the sorts of risks and uncertainties inherent in implementing an e-learning information systems project in Estonia. The study uses a variation of the Delphi study in eliciting the risk factors or items from experienced top management professionals within the organisation. The main objective of the study is to identify the uncertainties or risks in the implementation of the systems, using the viewpoint of Estonia, which is an emerging economy. The findings of the work indicate that wrong development strategy, staff volatility, change in top management and lack of funding are amongst the top risk factors in implementing e-learning in Estonia. On the other hand, risks …
Ethics and Learning Organizations in the New Economy
2012
In the context ofthe new economy, business organizations need to learn faster, and to maintain and to improve knowledge, producing creative solutions based on their knowledge, skills, and new technologies to develop a customer responsive culture in a more economic and efficient way. In order to achieve this, CEOs and Human Resource (HR) policies should potentially contribute to knowledge development by creating authentic learning organizations. The authors propose in this study that learning improvements in organizations are not just a matter of techniques or aptitudes, but also a matter of feelings, attitudes, and, above all, ofthe moral habits of their members. The authors strongly sugges…
How Smart Cities Explore New Technologies
2019
The concept of smart city is considered as a new paradigm of urban development. Information and communication technologies are expected to transform cities into smart cities and improve the citizens’ quality of life. However, smart city initiatives still have difficulties to leverage value from technology opportunities. How smart city initiatives examine the possibilities of new technologies is therefore a highly interesting question. Based on a multiple case study we identify two different approaches and factors that influence the choice of approach: Cities either initially focus on use cases solving urban challenges, or on a systematic build-up of a technological platform for future use c…
Expanding possibilities: Project work using ICT
2005
www.humantechnology.jyu.fi; One of the main findings from the SITES Module 2 study internationally is the increased use of project work connected to the use of information and communication technologies (ICTs) in many countries around the world. The Norwegian cases presented in this article support these findings, showing that when teachers and students use ICT in school settings, it is most often part of project work. However, there is a need to analyze to a larger degree the project work using ICT. In this article, project work using ICT is analyzed firstly by studying the changes in learning environment that the technology represents or as a catalyst for physical changes in the spaces in…
Challenges in implementing ICT in career services : perspectives from career development experts
2018
This article reports the findings from a phenomenographic investigation into career development experts’ conceptions of challenges involved in the implementation of information and communication technologies (ICT) in career services. The results show that these challenges varied from (1) inadequate access to ICT, (2) inadequate access to information, and (3) inadequate skills and competencies, to (4) inadequate integration. These findings provide a deeper understanding of critical aspects that may have an important role in the further development and successful implementation of existing and emerging technologies within the guidance service sector. peerReviewed
Diffusion Models in Analysing Emerging Technology-based Services
2005
In this article we discuss the problems of utilizing innovation diffusion (or, adoption) models in developing scenarios for mobile commerce services in three European countries: Finland, Germany, and Greece. We are not to test the various diffusion models as such, but rather to utilise the fundamental ideas of the models in determining the prerequisites for, the status of, and the pace of diffusion of mobile services in these different market areas. The estimates would serve as a starting point and as a validity check for scenario development. The early experience at the research design phase show that the ‘mainstream’ diffusion approach is vulnerable to three factors specific to the adopti…