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Author : 黃琮暐
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.:/5 (73 download)
Download or read book Optimal Control of Quantum Gate Operations in Open Quantum Systems written by 黃琮暐 and published by . This book was released on 2009 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shuang Cong
Publisher : John Wiley & Sons
ISBN 13 : 1118608151
Total Pages : 430 pages
Book Rating : 4.1/5 (186 download)
Download or read book Control of Quantum Systems written by Shuang Cong and published by John Wiley & Sons. This book was released on 2014-02-27 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced research reference examining the closed and open quantum systems Control of Quantum Systems: Theory and Methods provides an insight into the modern approaches to control of quantum systems evolution, with a focus on both closed and open (dissipative) quantum systems. The topic is timely covering the newest research in the field, and presents and summarizes practical methods and addresses the more theoretical aspects of control, which are of high current interest, but which are not covered at this level in other text books. The quantum control theory and methods written in the book are the results of combination of macro-control theory and microscopic quantum system features. As the development of the nanotechnology progresses, the quantum control theory and methods proposed today are expected to be useful in real quantum systems within five years. The progress of the quantum control theory and methods will promote the progress and development of quantum information, quantum computing, and quantum communication. Equips readers with the potential theories and advanced methods to solve existing problems in quantum optics/information/computing, mesoscopic systems, spin systems, superconducting devices, nano-mechanical devices, precision metrology. Ideal for researchers, academics and engineers in quantum engineering, quantum computing, quantum information, quantum communication, quantum physics, and quantum chemistry, whose research interests are quantum systems control.
Author : Daniel Basilewitsch
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (124 download)
Download or read book Optimal Control of Quantum Information Tasks in Open Quantum Systems written by Daniel Basilewitsch and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert M. Fisher
Publisher : Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN 13 : 9783838125206
Total Pages : 132 pages
Book Rating : 4.1/5 (252 download)
Download or read book Optimal Control of Multi-Level Quantum Systems written by Robert M. Fisher and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2011-03 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is concerned with the control of quantum systems. Given a Hamiltonian model of a quantum system, we are interested in finding controls-typically shaped electromagnetic pulses-that steer the evolution toward a desired target operation. For this we employ a numerical optimisation method known as the GRAPE algorithm. For particular experimental systems, we design control schemes that respect constraints of robustness and addressability, and are within the reach of the experimental hardware. Applications include the preparation of cluster states in a system of trapped ions, the implementation of the two-qubit Deutsch and Grover algorithms on a pair of carbon nuclei at a nitrogen-vacancy center in diamond, and the implementation of quantum gates on a grid of coupled superconducting qubits. In some special cases analytical solutions are obtained. The methods applied here are fairly general and can be adapted to a variety of other physical systems and tasks.
Author : 黃斌
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)
Download or read book Optimal Control of Quantum Gates for a Non-Markovian Open Quantum Qubit System written by 黃斌 and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gershon Kurizki
Publisher : Cambridge University Press
ISBN 13 : 1316814572
Total Pages : 488 pages
Book Rating : 4.3/5 (168 download)
Download or read book Thermodynamics and Control of Open Quantum Systems written by Gershon Kurizki and published by Cambridge University Press. This book was released on 2022-01-13 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The control of open quantum systems and their associated quantum thermodynamic properties is a topic of growing importance in modern quantum physics and quantum chemistry research. This unique and self-contained book presents a unifying perspective of such open quantum systems, first describing the fundamental theory behind these formidably complex systems, before introducing the models and techniques that are employed to control their quantum thermodynamics processes. A detailed discussion of real quantum devices is also covered, including quantum heat engines and quantum refrigerators. The theory of open quantum systems is developed pedagogically, from first principles, and the book is accessible to graduate students and researchers working in atomic physics, quantum information, condensed matter physics, and quantum chemistry.
Author : 戴榮身
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (899 download)
Download or read book Optimal Control of Quantum Gates in an Exactly Solvable Non-Markovian Open Quantum Bit System written by 戴榮身 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ariane Garon
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (88 download)
Download or read book On a New Visualization Tool for Quantum Systems and on a Time-optimal Control Problem for Quantum Gates written by Ariane Garon and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel M. Reich
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (92 download)
Download or read book Efficient Characterisation and Optimal Control of Open Quantum Systems - Mathematical Foundations and Physical Applications written by Daniel M. Reich and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Masoud Mohseni
Publisher :
ISBN 13 : 9780494280799
Total Pages : 496 pages
Book Rating : 4.2/5 (87 download)
Download or read book Characterization and Decoherence Control of Open Quantum Systems written by Masoud Mohseni and published by . This book was released on 2007 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optimal quantum algorithm for "direct characterization of quantum dynamics" (DCQD) is introduced. The DCQD method can be utilized to completely determine the quantum dynamical superoperator acting on an open quantum system. In contrast to all other known quantum process tomography (QPT) schemes, this scheme relies on error-detection techniques and does not require any quantum state tomography. By analysis of the number of required experimental configurations and quantum operations in a given Hilbert space, it is demonstrated that this approach is more efficient than all other known QPT schemes. DCQD can be applied, by construction, to the task of partial characterization of quantum dynamics. Specifically, it is demonstrated that the DCQD algorithm can be efficiently used for Hamiltonian identification, and also for simultaneous determination of both the relaxation time T1 and dephasing time T2. Furthermore, it is argued that the DCQD scheme is experimentally implementable in a variety of prominent quantum information processing systems, and it is explicitly shown how it can be physically realized in photonic systems with present day technology. The ability of a quantum system to perform arbitrary or "universal" quantum operations is restricted to its naturally available/controllable interactions. It is shown that quantum systems with an effective exchange interaction can be made operationally universal by utilizing a subspace or a subsystem of the combined principal system and an auxiliary system. Moreover, it is demonstrated that universal fault-tolerant quantum computation can be performed on these systems without utilizing any form of single-qubit control. Characterization and control of open quantum systems are among the central and fundamental problems in quantum physics. A crucial primitive is the characterization of the dynamics of a quantum system that has an unknown interaction with its embedding environment. Another essential task is to control the decoherence of an open quantum system by using naturally available interactions. This thesis addresses the above fundamental problems in two separate parts. In the first part, a general theory for direct and complete characterization of quantum dynamics is introduced. In the second part, a scheme for performing arbitrary quantum operations on spin-based quantum systems is presented. This scheme can be implemented in the presence of environmental noise and faulty quantum operations without need to control the state of spins individually.
Author : Vadim Krotov
Publisher : CRC Press
ISBN 13 : 9780824793296
Total Pages : 410 pages
Book Rating : 4.7/5 (932 download)
Download or read book Global Methods in Optimal Control Theory written by Vadim Krotov and published by CRC Press. This book was released on 1995-10-13 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work describes all basic equaitons and inequalities that form the necessary and sufficient optimality conditions of variational calculus and the theory of optimal control. Subjects addressed include developments in the investigation of optimality conditions, new classes of solutions, analytical and computation methods, and applications.
Author : Daniel M. Reich
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (92 download)
Download or read book Efficient Characterisation and Optimal Control of Open Quantum Systems - Mathematical Foundations and Physical Applications written by Daniel M. Reich and published by . This book was released on 2015 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Theo M Nieuwenhuizen
Publisher : World Scientific
ISBN 13 : 9814616745
Total Pages : 612 pages
Book Rating : 4.8/5 (146 download)
Download or read book Quantum Foundations And Open Quantum Systems: Lecture Notes Of The Advanced School written by Theo M Nieuwenhuizen and published by World Scientific. This book was released on 2014-10-03 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced School on Quantum Foundations and Open Quantum Systems was an exceptional combination of lectures. These comprise lectures in standard physics and investigations on the foundations of quantum physics.On the one hand it included lectures on quantum information, quantum open systems, quantum transport and quantum solid state. On the other hand it included lectures on quantum measurement, models for elementary particles, sub-quantum structures and aspects on the philosophy and principles of quantum physics.The special program of this school offered a broad outlook on the current and near future fundamental research in theoretical physics.The lectures are at the level of PhD students.
Author : Andrzej Jamiolkowski
Publisher : BoD – Books on Demand
ISBN 13 : 9535111418
Total Pages : 150 pages
Book Rating : 4.5/5 (351 download)
Download or read book Open Systems, Entanglement and Quantum Optics written by Andrzej Jamiolkowski and published by BoD – Books on Demand. This book was released on 2013-07-24 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this book is a presentation of some aspects of modern theory of open quantum systems. It introduces several up-to- date topics, such as detecting quantum entanglement, modeling of quantum noise, quantum communication processes, and computational complexity in the analysis of quantum operations. Also discussed are light propagation in optically dressed media, as well as entropy and information measure for quantized electromagnetic fields media. This book is intended for researchers and students interested in the theory of open quantum systems, quantum information theory and quantum systems interacting with electromagnetic fields.
Author : Robert Huneault
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (613 download)
Download or read book Time-optimal Control of Closed Quantum Systems written by Robert Huneault and published by . This book was released on 2009 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently there has been a lot of interest in the potential applications of performing computations on systems whose governing physical laws are quantum, rather than classical in nature. These quantum computers would have the ability to perform some calculations which would not be feasible for their classical counterparts. To date, however, a quantum computer large enough to perform useful calculations has yet to be built. Before this can be accomplished, a method must be developed to control the underlying quantum systems. This is a problem which can naturally be formulated in the language of control theory. This report outlines the basic control-theoretic approach to time-optimally controlling quantum systems evolving under the dynamics of the Schrödinger operator equation. It is found that under the assumption of non-singularity, the controls which produce time-optimal trajectories are bang-bang. With this in mind, a switching time algorithm is implemented to find optimal bang-bang controls.
Author : Subhashish Banerjee
Publisher : Springer
ISBN 13 : 9811331820
Total Pages : 289 pages
Book Rating : 4.8/5 (113 download)
Download or read book Open Quantum Systems written by Subhashish Banerjee and published by Springer. This book was released on 2018-11-01 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the elementary ideas and tools needed for open quantum systems in a comprehensive manner. The emphasis is given to both the traditional master equation as well as the functional (path) integral approaches. It discusses the basic paradigm of open systems, the harmonic oscillator and the two-level system in detail. The traditional topics of dissipation and tunneling, as well as the modern field of quantum information, find a prominent place in the book. Assuming a basic background of quantum and statistical mechanics, this book will help readers familiarize with the basic tools of open quantum systems. Open quantum systems is the study of quantum dynamics of the system of interest, taking into account the effects of the ambient environment. It is ubiquitous in the sense that any system could be envisaged to be surrounded by its environment which could naturally exert its influence on it. Open quantum systems allows for a systematic understanding of irreversible processes such as decoherence and dissipation, of the essence in order to have a correct understanding of realistic quantum dynamics and also for possible implementations. This would be essential for a possible development of quantum technologies.
Author : Erik Asplund
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (773 download)
Download or read book Control of Open Quantum Systems written by Erik Asplund and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topic of this thesis was the control of open quantum systems with the emphasis on the control of surface photochemical reactions. A quantum system in condensed phase, which undergoes dissipative processes, is an open quantum system. In this thesis, the description of open quantum systems was realized within the "Surrogate Hamiltonian" approach. An efficient and accurate method to find control fields is optimal control theory (OCT). In this thesis, a control scheme relying on OCT with time-dependent targets was employed to minimize the dissipative behavior of open quantum systems. To gain control of open quantum systems, the "Surrogate Hamiltonian" approach and OCT with time-dependent targets were combined. Three open quantum systems were investigated by the combined method, a harmonic oscillator immersed in an Ohmic bath, CO adsorbed on a Pt surface and NO adsorbed on a NiO surface. It was observed that dissipation could be subdued to a high degree for all three systems. engl.
