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Author: Oguzhan Murat Onen Publisher: ISBN: Category : Languages : en Pages : 100
Book Description
In this work, I first construct a unified simulation platform, where superconducting electronics can be designed and optimized with high performance and accuracy. For this purpose, I first select numerical simulation methods that can deal with the highly non-linear characteristics of the superconducting devices. I validate the simulated responses with experimental data on device and circuit level examples. Following the implementation of the simulator, I use this framework to analyze existing superconducting nanowire based technologies, and optimize them for wider operation regimes and higher performance metrics. I use nanofabrication processes to realize these devices and conduct liquid helium immersion measurements to characterize them experimentally. Optimized devices show superior characteristics that demonstrate the predictive capabilities of this simulator. Finally, I use this simulator to design a superconducting nanowire based deep neural network training accelerator. I design, implement, and characterize a unit cell for this application. These local processors have significant device-level advantages over the readily available non-volatile memory technologies in realizing mixed-signal architectures. The devices produced throughout this work have immediate and near-term applications, proving the merit of having a high-performance simulator.
Author: Oguzhan Murat Onen Publisher: ISBN: Category : Languages : en Pages : 100
Book Description
In this work, I first construct a unified simulation platform, where superconducting electronics can be designed and optimized with high performance and accuracy. For this purpose, I first select numerical simulation methods that can deal with the highly non-linear characteristics of the superconducting devices. I validate the simulated responses with experimental data on device and circuit level examples. Following the implementation of the simulator, I use this framework to analyze existing superconducting nanowire based technologies, and optimize them for wider operation regimes and higher performance metrics. I use nanofabrication processes to realize these devices and conduct liquid helium immersion measurements to characterize them experimentally. Optimized devices show superior characteristics that demonstrate the predictive capabilities of this simulator. Finally, I use this simulator to design a superconducting nanowire based deep neural network training accelerator. I design, implement, and characterize a unit cell for this application. These local processors have significant device-level advantages over the readily available non-volatile memory technologies in realizing mixed-signal architectures. The devices produced throughout this work have immediate and near-term applications, proving the merit of having a high-performance simulator.
Author: Raja Sekhar Dondapati Publisher: CRC Press ISBN: 1000191869 Category : Technology & Engineering Languages : en Pages : 227
Book Description
This book presents novel concepts in the development of high-temperature superconducting (HTS) devices and discusses the technologies involved in producing efficient and economically feasible energy technologies around the world. High-Temperature Superconducting Devices for Energy Application covers the application of high-temperature superconductors in clean energy production and allied cooling technologies. In addition, it presents the compatibility of other materials involved in the construction of various devices at cryogenic temperatures. It also summarizes superconducting fault current limiters (SFCL) and related grid stabilization. The book addresses the need to lower the losses incurred with efficient power transmission. The aim of this book is to serve the needs of industry professionals, researchers, and doctoral students studying energy technologies. Features Discusses the history of the development of high-temperature superconductors Covers cryogenic cooling technologies adapted for various superconducting devices Presents a detailed design of superconducting generators Highlights the importance of superconducting magnetic energy storage (SMES) devices in the power grid Focuses on theoretical computations
Author: J. Viswanathan Publisher: ISBN: Category : Computer simulation Languages : en Pages : 37
Book Description
Abstract: "This report describes the development of an equation-based dynamic simulator for the proposed Superconducting Super Collider (SSC) using SPEEDUP (Simulation Program for Evaluation and Evolutionary Design of Unsteady Processes)."
Author: Yu-Tao Yang Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
To build up large-scale quantum systems, four challenges in the existing hardware realization need to be addressed: (1) I/O management, (2) latency and phase matching in a large system footprint, (3) the heat and power dissipation as the qubit count scales up, and (4) transmission of delicate quantum information. To minimize these issues, there are efforts using different architectures, such as CryoCMOS, 3D stacking, and Josephson-Junction-based (JJ-based) approach. Superconducting Silicon Interconnect Fabric (Superconducting-IF) is yet another promising approach, which is an advanced fine-pitch and wafer-scale cryogenic packaging platform. The proposed architecture, which aims to co-integrate superconducting qubit control/readout with qubits in a compact way, and the demonstration of the Superconducting-IF are detailed. The key enabler of Superconducting-IF is the low-temperature assembly technology, the Au interlayer bonding method, which is demonstrated to be fine-pitch (≤ 10 um), mechanically robust (> 30 MPa), electrically reliable, and quantum-compatible (
Author: Publisher: ISBN: Category : Power resources Languages : en Pages : 868
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Author: Publisher: ISBN: Category : Languages : en Pages : 322
Book Description
Superconducting quantum circuit models are widely used to understand superconducting devices. This thesis consists of four studies wherein the superconducting quantum circuit is used to illustrate challenges related to quantum information encoding and processing, quantum simulation, quantum signal detection and amplification. The existence of scalar Aharanov-Bohm phase has been a controversial topic for decades. Scalar AB phase, defined as time integral of electric potential, gives rises to an extra phase factor in wavefunction. We proposed a superconducting quantum Faraday cage to detect temporal interference effect as a consequence of scalar AB phase. Using the superconducting quantum circuit model, the physical system is solved and resulting AB effect is predicted. Further discussion in this chapter shows that treating the experimental apparatus quantum mechanically, spatial scalar AB effect, proposed by Aharanov-Bohm, can't be observed. Either a decoherent interference apparatus is used to observe spatial scalar AB effect, or a quantum Faraday cage is used to observe temporal scalar AB effect. The second study involves protecting a quantum system from losing coherence, which is crucial to any practical quantum computation scheme. We present a theory to encode any qubit, especially superconducting qubits, into a universal quantum degeneracy point (UQDP) where low frequency noise is suppressed significantly. Numerical simulations for superconducting charge qubit using experimental parameters show that its coherence time is prolong by two orders of magnitude using our universal degeneracy point approach. With this improvement, a set of universal quantum gates can be performed at high fidelity without losing too much quantum coherence. Starting in 2004, the use of circuit QED has enabled the manipulation of superconducting qubits with photons. We applied quantum optical approach to model coupled resonators and obtained a four-wave mixing toolbox to operate photons states. The model and toolbox are engineered with a superconducting quantum circuit where two superconducting resonators are coupled via the UQDP circuit. Using fourth order perturbation theory one can realize a complete set of quantum operations between these two photon modes. This helps open a new field to treat photon modes as qubits. Additional, a three-wave mixing scheme using phase qubits permits one to engineer the coupling Hamiltonian using a phase qubit as a tunable coupler. Along with Feynman's idea using quantum to simulate quantum, superconducting quantum simulators have been studied intensively recently. Taking the advantage of mesoscopic size of superconducting circuit and local tunability, we came out the idea to simulate quantum phase transition due to disorder. Our first paper was to propose a superconducting quantum simulator of Bose-Hubbard model to do site-wise manipulation and observe Mott-insulator to superfluid phase transition. The side-band cooling of an array of superconducting resonators is solved after the paper was published. In light of the developed technology in manipulating quantum information with superconducting circuit, one can couple other quantum oscillator system to superconducting resonators in order manipulation of its quantum states or parametric amplification of weak quantum signal. A theory that works for different coupling schemes has been studied in chapter 5. This will be a platform for further research.
Author: National Academies of Sciences, Engineering, and Medicine Publisher: National Academies Press ISBN: 030947969X Category : Computers Languages : en Pages : 273
Book Description
Quantum mechanics, the subfield of physics that describes the behavior of very small (quantum) particles, provides the basis for a new paradigm of computing. First proposed in the 1980s as a way to improve computational modeling of quantum systems, the field of quantum computing has recently garnered significant attention due to progress in building small-scale devices. However, significant technical advances will be required before a large-scale, practical quantum computer can be achieved. Quantum Computing: Progress and Prospects provides an introduction to the field, including the unique characteristics and constraints of the technology, and assesses the feasibility and implications of creating a functional quantum computer capable of addressing real-world problems. This report considers hardware and software requirements, quantum algorithms, drivers of advances in quantum computing and quantum devices, benchmarks associated with relevant use cases, the time and resources required, and how to assess the probability of success.
Author: L.JIA WANG (L. X.DU, H. P.YANG, G. D.) Publisher: ISBN: Category : Languages : en Pages : 8
Book Description
The main challenge to build the cryogenic system for the Beijing Electron-Positron Collider Upgrade is to accommodate the strong differences among three types of superconducting devices with regard to their structure, location, as well as the cryogenic operating requirement. Three kinds of cooling methods are applied in the overall cryogenic system, saturated liquid helium cooling for the SRF cavities, single-phase helium cooling for the SCQ magnets, and two-phase helium cooling for the SSM solenoid. The optimization for the BEPCII cryogenic system was carried out by using a large-scale computational simulation package. This paper presents thermal parameters and numerical analyses for the BEPCII cryogenic system.
Author: Gennady Gildenblat Publisher: Springer Science & Business Media ISBN: 9048186145 Category : Technology & Engineering Languages : en Pages : 531
Book Description
Most of the recent texts on compact modeling are limited to a particular class of semiconductor devices and do not provide comprehensive coverage of the field. Having a single comprehensive reference for the compact models of most commonly used semiconductor devices (both active and passive) represents a significant advantage for the reader. Indeed, several kinds of semiconductor devices are routinely encountered in a single IC design or in a single modeling support group. Compact Modeling includes mostly the material that after several years of IC design applications has been found both theoretically sound and practically significant. Assigning the individual chapters to the groups responsible for the definitive work on the subject assures the highest possible degree of expertise on each of the covered models.
Author: Oguzhan Murat Onen
Author: Oguzhan Murat Onen
Author: Raja Sekhar Dondapati
Author: J. Viswanathan
Author: Yu-Tao Yang
Author: 
Author: 
Author: 
Author: National Academies of Sciences, Engineering, and Medicine
Author: L.JIA WANG (L. X.DU, H. P.YANG, G. D.)
Author: Gennady Gildenblat