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Hybrid quantum system based on rare earth doped crystals
Hybrid quantum circuits interfacing rare earth spin ensembles with microwave resonators are a promising approach for application as coherent quantum memory and frequency converter. In this thesis, hybrid circuits based on Er and Nd ions doped into Y?SiO? and YAlO? crystals are investigated by optical and on-chip microwave spectroscopy. Coherent strong coupling between the microwave resonator an…
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- 540 PRO h
Optimisation of hysteretic losses in high-temperature superconducting wires
Hysteretic loss optimisations through numerical simulation and subsequent experimental confirmation in transport current and background field measurements: ferromagnetic shielding and topological geometry optimisation is used to reduce energy dissipation in HTS coated conductor geometries. Single tapes and coil geometries are investigated. A 3D model capable of taking into account contact resis…
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- 978-3-7315-0185-5
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- 500 KRU o
Quantum simulation experiments with superconducting circuits
While the universal quantum computer seems not in reach for the near future, this work focusses on analog quantum simulation of intriguing quantum models of light-matter interactions, with the goal of achieving a computational speed-up as compared to classical hardware. Existing building blocks of quantum hardware are used from superconducting circuits, that have proven to be a very suitable ex…
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- 500 BRAq
Scanning Tunneling Spectroscopy on Electron-Boson Interactions in Superconduc…
This work describes the experimental study of electron-boson interactions in superconductors by means of inelastic electron tunneling spectroscopy performed with a scanning tunneling microscope (STM) at temperatures below 1 K. This new approach allows the direct measurement of the Eliashberg function of conventional superconductors as demonstrated on lead (Pb) and niobium (Nb). Preparative expe…
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- 978-3-7315-0238-8
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- 500 SCH s
Ultrafast photophysics and photochemistry of radical precursors in solution
The photoinduced dynamics of radical precursors in solution were investigated by means of femtosecond transient absorption spectroscopy assisted by quantum chemical calculations. The investigated systems show a wide range of excited state lifetimes ranging from tens of femtoseconds to nanoseconds. Thus, in the first case, on the investigated time scale the dynamics of the generated radicals can…
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- 978-3-86644-940-4
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- 500 WOL u
Microdevices and Microsystems for Cell Manipulation
Microfabricated devices and systems capable of micromanipulation are well-suited for the manipulation of cells. These technologies are capable of a variety of functions, including cell trapping, cell sorting, cell culturing, and cell surgery, often at single-cell or sub-cellular resolution. These functionalities are achieved through a variety of mechanisms, including mechanical, electrical, mag…
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- 978-3-03842-619-6
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- 500 MIC
Microwave Indices from Active and Passive Sensors for Remote Sensing Applicat…
Past research has comprehensively assessed the capabilities of satellite sensors operating at microwave frequencies, both active (SAR, scatterometers) and passive (radiometers), for the remote sensing of Earth’s surface. Besides brightness temperature and backscattering coefficient, microwave indices, defined as a combination of data collected at different frequencies and polarizations, revea…
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- 500 MIC
Dynamic scenarios in two-state quantum dot lasers : excited state lasing, gro…
André Röhm investigates the dynamic properties of two-state lasing quantum dot lasers, with a focus on ground state quenching. With a novel semi-analytical approach, different quenching mechanisms are discussed in an unified framework and verified with numerical simulations. The known results and experimental findings are reproduced and parameter dependencies are systematically studied. Add…
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- 9783658094027
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- xv, 102 pages
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- 530
Dynamics of big Internet industry groups and future trends : a view from epig…
This book applies a new analytical framework to the study of the evolution of large Internet companies such as Apple, Google, Microsoft, Facebook, Amazon and Samsung. It sheds light on the dynamics of business groups, which are approached as 'business ecosystems, ' and introduces the concept of Epigenetic Economic Dynamics (EED), which is defined as the study of the epigenetic dynamics generate…
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- 9783319311470
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- XXV, 254 pages
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- 338.7
Dynamics of Distribution and Diffusion of New Technology A Contribution to th…
This book presents a comprehensive study of adoption and diffusion of technology in developing countries in a historical perspective. Combining the development of growth trajectories of the Indian economy in general and its manufacturing industry in particular, the book highlights the effective marriage between qualitative and quantitative methods for a better understanding and explaining of ma…
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- 9783319327440
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- 338.7
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