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Hybrid Quantum Systems by Yoshiro Hirayama,Koji Ishibashi,Kae Nemoto Pdf
This book presents state-of-the-art research on quantum hybridization, manipulation, and measurement in the context of hybrid quantum systems. It covers a broad range of experimental and theoretical topics relevant to quantum hybridization, manipulation, and measurement technologies, including a magnetic field sensor based on spin qubits in diamond NV centers, coherently coupled superconductor qubits, novel coherent couplings between electron and nuclear spin, photons and phonons, and coherent coupling of atoms and photons. Each topic is concisely described by an expert at the forefront of the field, helping readers quickly catch up on the latest advances in fundamental sciences and technologies of hybrid quantum systems, while also providing an essential overview.
Hybrid Quantum Systems by Yoshiro Hirayama,Koji Ishibashi,Kae Nemoto Pdf
This book presents state-of-the-art research on quantum hybridization, manipulation, and measurement in the context of hybrid quantum systems. It covers a broad range of experimental and theoretical topics relevant to quantum hybridization, manipulation, and measurement technologies, including a magnetic field sensor based on spin qubits in diamond NV centers, coherently coupled superconductor qubits, novel coherent couplings between electron and nuclear spin, photons and phonons, and coherent coupling of atoms and photons. Each topic is concisely described by an expert at the forefront of the field, helping readers quickly catch up on the latest advances in fundamental sciences and technologies of hybrid quantum systems, while also providing an essential overview.
Integrated Quantum Hybrid Systems by Janik Wolters Pdf
Integrated quantum hybrid devices, built from classical dielectric nanostructures and individual quantum systems, promise to provide a scalable platform to study and exploit the laws of quantum physics. On the one hand, there are novel applications, such as efficient computation, secure communication, and measurements with unreached accuracy. On the other, hybrid devices might serve to explore the limits of our understanding of the physical world, that is, the formalism of quantum mechanics. Thus, optical quantum hybrid systems got into the focus of many researchers worldwide. This book gives a comprehensive yet lucid introduction to the exciting and fast-growing field of integrated quantum hybrid systems. It presents the theoretical and experimental fundamentals and then discusses several recent results and new proposals for future experiments. Illustrated throughout with excellent figures, the book also outlines the way for more complex devices to realize schemes to entangle distant quantum systems on-chip.
Cavity Optomechanics by Markus Aspelmeyer,Tobias J. Kippenberg,Florian Marquardt Pdf
During the last few years cavity-optomechanics has emerged as a new field of research. This highly interdisciplinary field studies the interaction between micro and nano mechanical systems and light. Possible applications range from novel high-bandwidth mechanical sensing devices through the generation of squeezed optical or mechanical states to even tests of quantum theory itself. This is one of the first books in this relatively young field. It is aimed at scientists, engineers and students who want to obtain a concise introduction to the state of the art in the field of cavity optomechanics. It is valuable to researchers in nano science, quantum optics, quantum information, gravitational wave detection and other cutting edge fields. Possible applications include biological sensing, frequency comb applications, silicon photonics etc. The technical content will be accessible to those who have familiarity with basic undergraduate physics.
Quantum Hybrid Electronics and Materials by Yoshiro Hirayama,Kazuhiko Hirakawa,Hiroshi Yamaguchi Pdf
This book highlights recent advances in quantum control technologies with regard to hybrid quantum systems. It addresses the following topics: phonon engineering based on phononic crystals, carbon-based nano materials like graphene and nanotubes, Terahertz light technology for single-molecule and quantum dots, nuclear-spin-based metrology for semiconductor quantum systems, quantum anomalous Hall effect in magnetic topological insulators, chiral three-dimensional photonic crystals, and bio-inspired magnonic systems. Each topic, as a component in the framework of hybrid quantum systems, is concisely presented by experts at the forefront of the field. Accordingly, the book offers a valuable asset, and will help readers find advanced technologies and materials suitable for their purposes.
Hybrid Quantum Metaheuristics by Siddhartha Bhattacharyya,Mario Köppen,Elizabeth Behrman,Ivan Cruz-Aceves Pdf
The reference text introduces the principles of quantum mechanics to evolve hybrid metaheuristics-based optimization techniques useful for real world engineering and scientific problems. The text covers advances and trends in methodological approaches, theoretical studies, mathematical and applied techniques related to hybrid quantum metaheuristics and their applications to engineering problems. The book will be accompanied by additional resources including video demonstration for each chapter. It will be a useful text for graduate students and professional in the field of electrical engineering, electronics and communications engineering, and computer science engineering, this text: Discusses quantum mechanical principles in detail. Emphasizes the recent and upcoming hybrid quantum metaheuristics in a comprehensive manner. Provides comparative statistical test analysis with conventional hybrid metaheuristics. Highlights real-life case studies, applications, and video demonstrations.
Hybrid Quantum System Based on Rare Earth Doped Crystals by Sebastian Probst Pdf
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 and spin ensemble as well as a multimode memory for weak coherent microwave pulses are demonstrated. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Quantum Sensing Experiments with Superconducting Qubits by Schneider, Andre Pdf
Quantum sensing is a vast and emerging field enabling in-situ studies of quantum systems and hence the development of quantum hybrid systems. This work creates the fundament of direct superconducting-magnetic hybrid systems by developing a local microwave sensing scheme and studying the influence of a static magnetic field on a superconducting qubit. Finally, a proof-of-principle hybrid system is demonstrated, which opens the path towards superconducting-magnetic quantum circuits.
Thermodynamics and Control of Open Quantum Systems by Gershon Kurizki,Abraham G. Kofman Pdf
The theory of open quantum systems is developed from first principles, and a detailed discussion of real quantum devices is also covered. This unique and self-contained book is accessible to graduate students and researchers working in atomic physics, quantum information, condensed matter physics, and quantum chemistry.
Quantum Teleportation and Entanglement by Akira Furusawa,Peter van Loock Pdf
Unique in that it is jointly written by an experimentalist and a theorist, this monograph presents universal quantum computation based on quantum teleportation as an elementary subroutine and multi-party entanglement as a universal resource. Optical approaches to measurement-based quantum computation are also described, including schemes for quantum error correction, with most of the experiments carried out by the authors themselves. Ranging from the theoretical background to the details of the experimental realization, the book describes results and advances in the field, backed by numerous illustrations of the authors' experimental setups. Aimed at researchers, physicists, and graduate and PhD students in physics, theoretical quantum optics, quantum mechanics, and quantum information.
Rydberg Physics in a Cryogenic System for Hybrid Quantum Interfaces by Juan Camilo Bohorquez (Ph.D.) Pdf
This thesis summarizes the hardware constructed for the Hybrid experiment, as well as the experimental progress made in Hybrid, to enable the construction of a Hybrid quantum system. This systems seeks to couple neutral atoms to high quality factor microwave cavities. Cavity QED systems, such as this one, are an integral part of atom-superconducting hybrid quantum computing. These systems are also promising candidates for transduction of quantum information from the microwave to the optical regime. Such transduction would enable the quantum networking of superconducting (SC) quantum registers at long distances. Rydberg atoms are uniquely suited to such cavity QED systems owing to the strong dipole moments of microwave-frequency Rydberg-Rydberg transitions, and the accessibility of optical transitions. Though the development of such systems is made challenging due to the significant dc polarizability of Rydberg states, and the size of electric field noise near surfaces. This thesis outlines the application of a microwave dressing scheme to a Rydberg system, and a demonstration of the reduction of polarizability said states by a factor of 7. In addition, we summarize modeling and analysis of the dressed-atom system, and how such a dressing scheme can be engineered to fully null the polarizability of a Rydberg state in one direction. We also summarize the limits of the dressing scheme, namely the anisotropy of the polarizability of the dressed Rydberg states, where in one direction the polarizability may be fully nulled, but in normal directions the polarizability is only reduced by 50[percent]. We also demonstrate and discuss the enhanced fourth-order, hyperpolarizability, of the dressed Rydberg states, and how even in relatively weak dc fields (~ 20 mV/cm) these effects can come to dominate the un-dressed polarizability. Through these drawbacks, coupled with a study of the published efforts to understand and mitigate electric field noise from surfaces, we conclude that a dressing scheme alone will be insufficient to enable high-fidelity Rydberg cavity QED demonstrations in our device on its own. Such efforts would require a greater atom-surface distance, as well as the implementation of significant dc surface field noise mitigation and compensation techniques, in conjunction with the dressing scheme proposed, to produce the required fidelity of atom-cavity interactions. This thesis then discusses the first demonstration of Rydberg Rabi excitations via a novel quadrupole-dipole two-photon excitation scheme. This scheme presents a significant reduction in the Doppler-shift induced dephasing in finite temperature atomic systems, due to the significantly reduced k-vector mismatch between the counter-propagating Rydberg fields. This thesis presents an analytical model for understanding the quadrupole excitation dynamics, as well as the two-photon Rabi dynamics of the driven system, in the adiabatic regime. This thesis also uses a tool to solve the master equation to evaluate the validity of the {adiabatic elimination} approximation in our system. We then uses those analytical and numerical tools to engineer the Rydberg laser polarizations, frequencies and powers for improved Rabi flopping fidelity. The analytical treatment is followed up with experimental date, demonstrating the Rydberg Rabi flopping between the ground state and $\ds 52P_{3/2},m_j=1/2$ Rydberg state. We supplement the experimental data, and analysis of it with a detailed accounting of the parameters of the Rydberg laser fields and noise sources which degrade the fidelity of the Rydberg Rabi operations, as measured {in situ}, or calibrated externally. Finally this thesis present a path forward for the Hybrid experiment, considering the challenges presented by surface electric field noise. The upgraded design for the experimental system makes use of a bulk microwave resonator, designed to require much greater atom-surface distances inside the atom-cavity interaction region. This device would enable atom-cavity interactions for cavity frequencies in the 5-7 GHz band, the native operating frequencies of existing SC quantum systems, while allowing the users to mitigate the size and effects of surface electric fields. We discuss the design considerations and current status of the new cavity design, as well as the design of the optical trapping, transport and readout techniques which will be used to localize and control the atoms inside the interaction region.
Quantum Materials, Lateral Semiconductor Nanostructures, Hybrid Systems and Nanocrystals by Detlef Heitmann Pdf
Semiconductor nanostructures are ideal systems to tailor the physical properties via quantum effects, utilizing special growth techniques, self-assembling, wet chemical processes or lithographic tools in combination with tuneable external electric and magnetic fields. Such systems are called "Quantum Materials".The electronic, photonic, and phononic properties of these systems are governed by size quantization and discrete energy levels. The charging is controlled by the Coulomb blockade. The spin can be manipulated by the geometrical structure, external gates and by integrating hybrid ferromagnetic emitters.This book reviews sophisticated preparation methods for quantum materials based on III-V and II-VI semiconductors and a wide variety of experimental techniques for the investigation of these interesting systems. It highlights selected experiments and theoretical concepts and gives such a state-of-the-art overview about the wide field of physics and chemistry that can be studied in these systems.
Quantum Simulators by T. Calarco,R. Fazio,P. Mataloni Pdf
The last century has been characterized by the development of information theory and the consequent transformative impact of new technologies on societies around the world. It seems likely that the tremendous progress in nanoscience – the ability to manipulate microscopic systems at the level of a single atom – and the emergence of quantum information science, will be the key components of the next revolution; that of the new quantum technologies. Indeed, the ability to manipulate and control quantum systems has already found a variety of potential applications, ranging from the development of molecular nanoscale machines which exploit quantum coherence for their functioning, to metrological schemes where quantum effects are used to enhance the accuracy of measurement and detection systems to achieve higher statistical precision than is possible using purely classical approaches. This book presents the proceedings of the Enrico Fermi Summer School on Quantum Simulators (Course 198) held in Varenna, Italy, 22-27 July 2016. Topics covered included: cold atoms in optical lattices; trapped ions; solid state implementations; quantum many-body physics; quantum photonics; hybrid quantum systems; and transport phenomena. The book will be of interest to all those whose work is connected to the rapidly growing field of quantum technologies.
