Download or read book Electrical Control and Quantum Chaos with a High Spin Nucleus in Silicon written by Serwan Asaad and published by Springer Nature. This book was released on 2021-10-19 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear spins are highly coherent quantum objects that were featured in early ideas and demonstrations of quantum information processing. In silicon, the high-fidelity coherent control of a single phosphorus (31-P) nuclear spin I=1/2 has demonstrated record-breaking coherence times, entanglement, and weak measurements. In this thesis, we demonstrate the coherent quantum control of a single antimony (123-Sb) donor atom, whose higher nuclear spin I = 7/2 corresponds to eight nuclear spin states. However, rather than conventional nuclear magnetic resonance (NMR), we employ nuclear electric resonance (NER) to drive nuclear spin transitions using localized electric fields produced within a silicon nanoelectronic device. This method exploits an idea first proposed in 1961 but never realized experimentally with a single nucleus, nor in a non-polar crystal such as silicon. We then present a realistic proposal to construct a chaotic driven top from the nuclear spin of 123-Sb. Signatures of chaos are expected to arise for experimentally realizable parameters of the system, allowing the study of the relation between quantum decoherence and classical chaos, and the observation of dynamical tunneling. These results show that high-spin quadrupolar nuclei could be deployed as chaotic models, strain sensors, hybrid spin-mechanical quantum systems, and quantum-computing elements using all-electrical controls.
Download or read book Quantum Computing with Spin Qubits in Lithium doped Silicon written by Erin M. Handberg and published by . This book was released on 2012 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum information processing (QIP) is one of the most promising and exciting areas of nanoscience and nanotechnology. Silicon-based quantum computers have become popular candidates for QIP partly because the needed nanoscale manufacturing techniques are well-established for modern silicon electronics. Furthermore, electron spins bound to donors in Si have proven to be some of the most, if not the most, coherent quantum structures among proposed solid state QIP systems to date. Unfortunately, a serious obstacle impeding the physical implementation of quantum computing technology is the ability to readily control quantum bits (qubits). The unique inverted electronic structure of the lithium donor in silicon makes these quantum structures not only strongly coherent, but also readily manipulable. The goal of this work is the development of a complete quantum computing scheme allowing for electrical and piezoelastic control of lithium spin qubits in silicon. To achieve our goal and to enable electrical control of lithium spin qubits, we study the effect of a static electric field on lithium donor spins in silicon. We demonstrate that the anisotropy of the effective mass leads to the anisotropy of the quadratic Stark susceptibility. Using the Dalgarno-Lewis exact summation method, we are able to calculate the Stark susceptibilities and analyze several important physical effects. We show the energy level shifts due to the quadratic Stark effect are equivalent to, and can be mapped onto, those produced by an external stress. Furthermore, we show the energy level shifts, combined with the unique valley-orbit splitting of the Li donor in Si, spin-orbit interaction and specially tuned external stress, leads to a very strong modulation of the donor spin g-factor and electron spin resonance (ESR) lines by the electric field. We propose a complete quantum computing scheme based on Li donors in Si. With the system under external biaxial stress, the qubits are encoded on a ground state Zeeman doublet and arc coupled via the acoustic-phonon-mediated long-range spin-spin interaction. We utilize g-factor control of the qubits to perform a specially-designed sequence of electric field impulses in order to execute both the cz gate and the universal CNOT gate. Using the quadratic Stark effect calculations and electron-phonon decoherence times, we estimate that the typical two-qubit gate time is on the order of ~ 1 [us] with a quality factor of [~ 10 -6]. A possible extension to these results is the piezoelastic control of spin qubits in semiconductors, which may open new avenues in solid state quantum information processing. This work has been supported by the following agencies: the National Security Agency (NSA), the Army Research Office (ARO) and the National Aeronautics and Space Administration (NASA).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2004 Graduate Programs in Physics Astronomy and Related Fields written by American Institute of Physics and published by American Institute of Physics. This book was released on 2003-11-06 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive compendium provides information on nearly every U.S. doctoral program in physics and astronomy, plus data on most major master's programs in these fields. Information on many major Canadian programs is also included. In addition, the Graduate Programs directory lists a substantial number of related-field departments, including materials science, electrical and nuclear engineering, meteorology, medical and chemical physics, geophysics, and oceanography. This twenty-eighth annual edition contains information valuable to students planning graduate study and faculty advisors, including each program's research expenditures and sources of support. A number of helpful appendices make navigating the directory a simple task.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Science Abstracts written by and published by . This book was released on 1985 with total page 2080 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2003 Graduate Programs in Physics Astronomy and Related Fields written by American Institute of Physics and published by . This book was released on 2002 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive compendium provides information on nearly every U.S. doctoral program in physics and astronomy, plus data on most major master's programs in these fields. Information on many major Canadian programs is also included. In addition, the Graduate Programs directory lists a substantial number of related-field departments, including materials science, electrical and nuclear engineering, meteorology, medical and chemical physics, geophysics, and oceanography. This twenty-seventh annual edition contains information valuable to students planning graduate study and faculty advisors, including each program's research expenditures and sources of support. A number of helpful appendices make navigating the directory a simple task.
Download or read book Physics Briefs written by and published by . This book was released on 1994-07 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nucleus written by F.D. Smit and published by Springer Science & Business Media. This book was released on 1999 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Conference on The Nucleus: New Physics for the New Millennium, held January 18-22, 1999, at the National Accelerator Centre, Faure, South Africa
Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1988 with total page 1440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994-11 with total page 1796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to Quantum Computing written by Phillip Kaye and published by Oxford University Press. This book was released on 2007 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors provide an introduction to quantum computing. Aimed at advanced undergraduate and beginning graduate students in these disciplines, this text is illustrated with diagrams and exercises.
Download or read book Quantum State Transfer and Network Engineering written by Georgios M. Nikolopoulos and published by Springer Science & Business Media. This book was released on 2013-10-05 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faithful communication is a necessary precondition for large-scale quantum information processing and networking, irrespective of the physical platform. Thus, the problems of quantum-state transfer and quantum-network engineering have attracted enormous interest over the last years, and constitute one of the most active areas of research in quantum information processing. The present volume introduces the reader to fundamental concepts and various aspects of this exciting research area, including links to other related areas and problems. The implementation of state-transfer schemes and the engineering of quantum networks are discussed in the framework of various quantum optical and condensed matter systems, emphasizing the interdisciplinary character of the research area. Each chapter is a review of theoretical or experimental achievements on a particular topic, written by leading scientists in the field. The volume aims at both newcomers as well as experienced researchers.
Download or read book Electronic Structure of Quantum Confined Atoms and Molecules written by K.D. Sen and published by Springer. This book was released on 2014-09-19 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume is a collection of review articles highlighting the fundamental advances made in this area by the internationally acclaimed research groups , most of them being pioneers themselves and coming together for the first time.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensed Matter Field Theory written by Alexander Altland and published by Cambridge University Press. This book was released on 2010-03-11 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: This primer is aimed at elevating graduate students of condensed matter theory to a level where they can engage in independent research. Topics covered include second quantisation, path and functional field integration, mean-field theory and collective phenomena.
Download or read book Atomic and Quantum Physics written by Hermann Haken and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic physics and its underlying quantum theory are the point of departure for many modern areas of physics, astrophysics, chemistry, biology, and even electrical engineering. This textbook provides a careful and eminently readable introduction to the results and methods of empirical atomic physics. The student will acquire the tools of quantum physics and at the same time learn about the interplay between experiment and theory. A chapter on the quantum theory of the chemical bond provides the reader with an introduction to molecular physics. Plenty of problems are given to elucidate the material. The authors also discuss laser physics and nonlinear spectroscopy, incorporating latest experimental results and showing their relevance to basic research. Extra items in the second edition include solutions to the exercises, derivations of the relativistic Klein-Gordon and Dirac equations, a detailed theoretical derivation of the Lamb shift, a discussion of new developments in the spectroscopy of inner shells, and new applications of NMR spectroscopy, for instance tomography.
