Download or read book Optimizing Ion shuttling Operations in Trapped ion Quantum Computers written by Luke Qi and published by . This book was released on 2021 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trapped ions are a promising candidate for quantum computation. As experiments with ions increase in size and complexity, a trap array-based architecture for an ion trap with many independent zones provides a path towards large-scale integration. A crucial element in the operation of a trap array is the ability to split, move and recombine chains of ions on diabatic timescales and without incurring excessive decoherence of information stored in ion qubits. In this thesis, I investigate whether ion transport and splitting can be realistically integrated in the future quantum processor and what the requirements are to achieve this. I discuss my end-to-end numerical simulation pipeline of the ion shuttling process. Using these simulation tools, I investigate the leading theories for ion transport and splitting, based on Shortcuts-to-Adiabaticity principles, and extend these methods into two central criteria for optimal ion shuttling. I present a novel method for optimizing the voltage controls to achieve optimal ion shuttling, that use accurate models of the digital-to-analog converters, amplifiers, and low-pass filters of our ion trapping system. I demonstrate fast and robust transport of 40Ca on our custom-designed surface electrode trap and share spectroscopy data taken during the first ever attempt at optimal splitting. I then outline the necessary steps to achieve fast splitting with less than 1 quanta of excitation. It is my hope that the theories, software, and experimental results presented in this thesis demonstrate the feasibility of optimal ion transport and splitting in state-of-the-art, scalabale surface traps and become a standard for future ion shuttling experiments.
Download or read book Quantum Computing written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-04-27 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Scalable Microchip Ion Traps for Quantum Computation written by Stephan Schulz and published by Lulu.com. This book was released on 2010-09-13 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of scalable microfabricated ion traps with multiple segments for the realization of quantum computing is a challenging task in quantum information science. The research on the design, development, fabrication, and operation of the first European micro-trap is shown in this thesis. This chip-based micro-trap is an outstanding candidate towards experiments for a future quantum processor with trapped single ions. In the experiments coherent quantum state manipulation is demonstrated, and sideband cooling to the motional ground state is realized. The heating rate is determined and the applicability for quantum computation is proven. Furthermore planar trap designs are investigated - a planar microparticle trap was built and operated. A linear microfabricated planar trap was operated, showing the proof of concept of a novel designed and fabricated Y-shaped planar trap.
Download or read book An Optical fiber Interface to a Trapped ion Quantum Computer written by Tony Hyun Kim and published by . This book was released on 2011 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: The trapped-ion quantum computer is an atom-based implementation of a quantum computer that has successfully demonstrated numerous quantum algorithms and the potential for scalability. Fundamental to its operation is the short-range Coulombic interaction among its atomic ion registers, which has led to the development of local, single-chip devices. In this work, we demonstrate the integration of an optical-fiber with a planar ion trap, and show the physical interaction between fiber light and the trapped-ion qubit. As the single-mode fiber is well-suited to the transport of single photons, the fiber interface (when augmented by an optical cavity) represents a means to link distantly located quantum computers through a common optical network. Hence, this work represents a step towards the paradigm of distributed quantum computing: self-contained, technically-simple processors may be optically linked together to perform large-scale quantum computation. This thesis is divided into two parts. In the first, we provide a thorough review of ion trap design and a detailed numerical analysis of trapped-ion motion. This theoretical discussion culminates with the development of an electronic technique that permits the arbitrary, in situ positioning of a trapped atom in the ion trap. The positioning ability is an enabling technology for trap-integration as it allows for complete freedom in the alignment of the trapped atom with respect to the integrated element. In the second part, the construction of the experimental setup and the integrated "fibertrap" is described. In our experiment, a single 38Sr+ is trapped 670 [mu]m above the end of an optical fiber in a cryogenic (8 K) surface-electrode ion trap. The fiber serves as an integrated source of laser light, which drives the quadrupole qubit transition of 88Sr+. Using in situ translation of the ion, the Gaussian beam profile of the fiber output is imaged, and the fiberion displacement, in units of the mode waist at the ion, is optimized to within 0.13 ± 0.10 of the mode center despite an initial offset of 3.30 ± 0.10 arising from fabrication. We also quantify the perturbative effects of the fiber dielectric on ion trap operation. Light-induced charging by 125 [mu]W of 674 nm fiber light is measured as an induced electric field of ~ 10 V/m at the ion, with charging and discharging time constants of 1.6 ± 0.3 s and 4.7 t 0.6 s. These measurements are of general importance to trapped-ion quantum computing, where the scalability of the platform depends crucially on the feasibility of on-chip optics integration.
Download or read book Fault tolerant Quantum Error Correction with Trapped ion Quantum Bits written by Janine Hilder and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trapped-ion quantum information processing is among the most promising candidates to realize a scalable quantum computer. A segmented Paul trap can be used to move ions in and out of storage and processing regions via dynamic register reconfiguration operations, enabling effective all-to-all connectivity. The processing region is dedicated to perform laser-driven operations, such as single-qubit rotations and two-qubit entangling gates. To achieve the long-term goal of a large-scale fault-tolerant quantum computer, it is of crucial importance to realize quantum error correction. This thesis focuses on the experimental realization of a fault-tolerant (FT) weight- 4 parity check measurement (PCM) scheme on a trapped-ion quantum processor node. The scheme presented here uses only minimal resource overhead in the form of one additional 'flag' qubit, to detect errors that would proliferate onto the data qubit register as uncorrectable weight-2 errors. This parity check measurement is an important building block in a broad class of resource-efficient flag-based quantum error correction protocols, such as the topological color code. The experimental result presented is one of the first realizations of the FT PCM scheme on a shuttlingbased trapped-ion quantum computing architecture. A parity measurement fidelity of 92.3(2)% is achieved, which is increased to 93.2(2)% upon flag-qubit conditioning, exceeding the bare parity fidelity by 4.5 standard errors. Injection of bit- and phaseflip errors shows that the scheme is able to reliably intercept faults. For holistic benchmarking, an entanglement witnessing scheme is used, to verify the generation of six-qubit multipartite entanglement, involving all ions participating in the faulttolerant parity measurement. Within the work presented here, improvements of the register reconfiguration operations were carried out, in order to reduce the motional excitation in quantum circuits with a high number of transport, separation/merge and positional ion swap operations, such as the parity measurement scheme. Taking into account the architectural features of the shuttling-based trapped-ion quantum processor, such as effective all-to-all connectivity and no operational crosstalk, the demonstrated building block of flag-based fault-tolerant quantum error correction lays out a clear path towards scalable fault-tolerant quantum computing.
Download or read book Ion Traps for Tomorrow s Applications written by M. Knoop and published by IOS Press. This book was released on 2015-07-21 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ion trapping was first accomplished in Europe more than 50 years ago. Since then, research and development have increased steadily, and the last decades have seen a remarkable growth in applications, mainly due to the improvement of laser-based techniques for spectroscopy, cooling and the manipulation of ions. Nowadays ion trapping plays a crucial role in a wide range of disciplines, including atomic and plasma physics, chemistry, high precision measurement, high energy physics and the emerging field of quantum technologies. This book presents lectures and reports from the Enrico Fermi School ‘Ion Traps for Tomorrow's Applications’, held in Varenna, Italy, in July 2013. Reflecting the aim of the school to exploit diversity and stimulate cross fertilization, the selected topics and highlights in this book partly review the wide range of subjects discussed during the course, while providing an overview of this topical domain. As well as providing a useful reference guide, the book will be a source of inspiration for all those planning to work on ion trapping in the future.
Download or read book Fault tolerant Parity Readout on a Shuttling based Trapped ion Quantum Computer written by Janine Hilder and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Addressing Single Yb 1hn Ions written by Alexander Braun and published by Cuvillier Verlag. This book was released on 2007 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trapping Highly Charged Ions written by John Gillaspy and published by Nova Publishers. This book was released on 2001 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides and elementary introduction to the field of trapping highly charged ions. The first group of chapters is intended to describe the various sorts of highly charged ion traps: EBIT, EBIS, ECR, Storage Rings and various speciality traps. The authors focus on their own ion trap facilities in order to teach by example. The chapters range in scope from comprehensive reviews to brief introductions. The second group of chapters is intended to give a flavour of the various sorts of scientific research which are presently being carried out with traps for highly charged ions. These chapters not only inform, but also stimulate newcomers to think up fresh ideas. The articles in this second group generally fall into one of three broad categories: atomic structure experiments, ion-surface interactions and precision mass spectrometry. The third group of chapters is intended to deal with theory and spectroscopic analysis. It provides some of the background material necessary to make sense of observed phenomenology, to allow detailed explanation of experimental data, and to sensibly plan further experimentation. An appendix provides a complete keyword-annotated bibliography of pa
Download or read book Experimental Issues in Coherent Quantum State Manipulation of Trapped Atomic Ions written by and published by . This book was released on 1998 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods for, and limitations to, the generation of entangled states of trapped atomic ions are examined. As much as possible, state manipulations are described in terms of quantum logic operations since the conditional dynamics implicit in quantum logic is central to the creation of entanglement. Keeping with current interest, some experimental issues in the proposal for trapped-ion quantum computation by J.I. Cirac and P. Zoller (University of Innsbruck) are discussed. Several possible decoherence mechanisms are examined and what may be the more important of these are identified. Some potential applications for entangled states of trapped-ions which lie outside the immediate realm of quantum computation are also discussed.
Download or read book A Shuttling based Trapped ion Quantum Processing Node written by Vidyut Kaushal and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Making IT Sustainable written by Mikhail Gloukhovtsev and published by Elsevier. This book was released on 2024-06-11 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Making IT Sustainable: Techniques and Applications delves into how energy efficiency improvements and renewable energy use in Information Technology (IT) or broader – in Information Communications Technology (ICT) – can contribute to the goal of remediating the impact of climate change. New technologies to reduce the IT carbon footprint are investigated and new methods of server high-density liquid cooling and intelligent power management in data centers are discussed. The book asks several insightful questions: How can environmentally sustainable data centers be built? How do we compare the carbon footprint of data centers versus public cloud, and cloud-focused IT sustainability standards? As growth in data traffic such as video streaming requires additional internet infrastructure, leading to higher emissions, how is this challenge being addressed and how can we improve energy efficiency in IT such as Adiabatic Reversible Computing, use of direct current, and dematerialization are discussed? For many companies and organizations, IT sustainability is becoming important in the environmental category of Corporate Social Responsibility (CSR). This book provides actionable, practical information for IT companies to develop their IT sustainability programs. IT directors and managers responsible for these programs will find the book useful. As pros and cons of various technology solutions for achieving IT sustainability are critically reviewed in detail, the book can serve as a practical guide for IT professionals working on implementing IT sustainability solutions. - Presents various initiatives to address IT sustainability, looking at approaches for improving energy efficiency in IT such as Adiabatic Reversible Computing, use of direct current, and dematerialization - Focuses on the design of sustainable IT systems and aims to be solution oriented - Reviews innovations in software development that contribute to GHG emission reductions such as Rust programming language - Investigates innovations in data center technologies, green software, adiabatic reversible computing, and cloud computing
Download or read book Quantum Information written by Dagmar Bruss and published by John Wiley & Sons. This book was released on 2019-01-30 with total page 909 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive textbook on the rapidly advancing field introduces readers to the fundamental concepts of information theory and quantum entanglement, taking into account the current state of research and development. It thus covers all current concepts in quantum computing, both theoretical and experimental, before moving on to the latest implementations of quantum computing and communication protocols. It contains problems and exercises and is therefore ideally suited for students and lecturers in physics and informatics, as well as experimental and theoretical physicists in academia and industry who work in the field of quantum information processing. The second edition incorporates important recent developments such as quantum metrology, quantum correlations beyond entanglement, and advances in quantum computing with solid state devices.
Download or read book Robust Quantum Logic for Trapped Ion Quantum Computers written by Anna Elizabeth Webb and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantum Information 2 Volume Set written by Dagmar Bruss and published by John Wiley & Sons. This book was released on 2019-06-10 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive textbook on the rapidly advancing field introduces readers to the fundamental concepts of information theory and quantum entanglement, taking into account the current state of research and development. It thus covers all current concepts in quantum computing, both theoretical and experimental, before moving on to the latest implementations of quantum computing and communication protocols. It contains problems and exercises and is therefore ideally suited for students and lecturers in physics and informatics, as well as experimental and theoretical physicists in academia and industry who work in the field of quantum information processing. The second edition incorporates important recent developments such as quantum metrology, quantum correlations beyond entanglement, and advances in quantum computing with solid state devices.
Download or read book Manipulating Quantum Systems written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-09-14 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of atomic, molecular, and optical (AMO) science underpins many technologies and continues to progress at an exciting pace for both scientific discoveries and technological innovations. AMO physics studies the fundamental building blocks of functioning matter to help advance the understanding of the universe. It is a foundational discipline within the physical sciences, relating to atoms and their constituents, to molecules, and to light at the quantum level. AMO physics combines fundamental research with practical application, coupling fundamental scientific discovery to rapidly evolving technological advances, innovation and commercialization. Due to the wide-reaching intellectual, societal, and economical impact of AMO, it is important to review recent advances and future opportunities in AMO physics. Manipulating Quantum Systems: An Assessment of Atomic, Molecular, and Optical Physics in the United States assesses opportunities in AMO science and technology over the coming decade. Key topics in this report include tools made of light; emerging phenomena from few- to many-body systems; the foundations of quantum information science and technologies; quantum dynamics in the time and frequency domains; precision and the nature of the universe, and the broader impact of AMO science.
Download or read book Computational Complexity written by Robert A. Meyers and published by Springer. This book was released on 2011-10-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complex systems are systems that comprise many interacting parts with the ability to generate a new quality of collective behavior through self-organization, e.g. the spontaneous formation of temporal, spatial or functional structures. These systems are often characterized by extreme sensitivity to initial conditions as well as emergent behavior that are not readily predictable or even completely deterministic. The recognition that the collective behavior of the whole system cannot be simply inferred from an understanding of the behavior of the individual components has led to the development of numerous sophisticated new computational and modeling tools with applications to a wide range of scientific, engineering, and societal phenomena. Computational Complexity: Theory, Techniques and Applications presents a detailed and integrated view of the theoretical basis, computational methods, and state-of-the-art approaches to investigating and modeling of inherently difficult problems whose solution requires extensive resources approaching the practical limits of present-day computer systems. This comprehensive and authoritative reference examines key components of computational complexity, including cellular automata, graph theory, data mining, granular computing, soft computing, wavelets, and more.
