Multi-Step Multi-Input One-Way Quantum Information Processing with Spatial and Temporal Modes of Light PDF Download

Author: Ryuji Ukai
Publisher: Springer
ISBN: 4431550194
Category : Science
Languages : en
Pages : 351

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Book Description
In this thesis, the author develops for the first time an implementation methodology for arbitrary Gaussian operations using temporal-mode cluster states. The author also presents three experiments involving continuous-variable one-way quantum computations, where their non-classical nature is shown by observing entanglement at the outputs. The experimental basic structure of one-way quantum computation over two-mode input state is demonstrated by the controlled-Z gate and the optimum nonlocal gate experiments. Furthermore, the author proves that the operation can be controlled by the gain-tunable entangling gate experiment.

Author: Ryuji Ukai
Publisher:
ISBN: 9784431550204
Category :
Languages : en
Pages : 372

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Book Description

Author: Dagmar Bruss
Publisher: John Wiley & Sons
ISBN: 3527805796
Category : Science
Languages : en
Pages : 1152

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Book Description
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.

Author: Dagmar Bruss
Publisher: John Wiley & Sons
ISBN: 3527413537
Category : Science
Languages : en
Pages : 912

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Book Description
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.

Author: Akira Furusawa
Publisher: John Wiley & Sons
ISBN: 3527635297
Category : Science
Languages : en
Pages : 335

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Book Description
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.

Author: Pieter Kok
Publisher: Cambridge University Press
ISBN: 1139486438
Category : Science
Languages : en
Pages : 505

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Book Description
Quantum information processing offers fundamental improvements over classical information processing, such as computing power, secure communication, and high-precision measurements. However, the best way to create practical devices is not yet known. This textbook describes the techniques that are likely to be used in implementing optical quantum information processors. After developing the fundamental concepts in quantum optics and quantum information theory, the book shows how optical systems can be used to build quantum computers according to the most recent ideas. It discusses implementations based on single photons and linear optics, optically controlled atoms and solid-state systems, atomic ensembles, and optical continuous variables. This book is ideal for graduate students beginning research in optical quantum information processing. It presents the most important techniques of the field using worked examples and over 120 exercises.

Author: N J Cerf
Publisher: World Scientific
ISBN: 1908979364
Category :
Languages : en
Pages : 632

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Book Description
Quantum information describes the new field which bridges quantum physics and information science. The quantum world allows for completely new architectures and protocols. While originally formulated in continuous quantum variables, the field worked almost exclusively with discrete variables, such as single photons and photon pairs. The renaissance of continuous variables came with European research consortia such as ACQUIRE (Advanced Coherent Quantum Information Research) in the late 1990s, and QUICOV (Quantum Information with Continuous Variables) from 2000–2003. The encouraging research results of QUICOV and the new conference series CVQIP (Continuous Variable Quantum Information Processing) triggered the idea for this book. This book presents the state of the art of quantum information with continuous quantum variables. The individual chapters discuss results achieved in QUICOV and presented at the first five CVQIP conferences from 2002-2006. Many world-leading scientists working on continuous variables outside Europe also contribute to the book. Contents: Bipartite and Multipartite Entanglement of Gaussian States (G Adesso & F Illuminati)Gaussian Quantum Channels (J Eisert & M M Wolf)Entanglement in Systems of Interacting Harmonic Oscillators (K M R Audenaert et al.)Continuous-Variable Quantum Key Distribution (F Grosshans et al.)Gaussian Quantum Cellular Automata (O Krüger & R F Werner)Distillation of Continuous-Variable Entanglement (J Fiurášek et al.)Loophole-Free Test of Quantum Nonlocality with Continuous Variables of Light (R García-Patrón et al.)Homodyne Tomography and the Reconstruction of Quantum States of Light (G M D'Ariano et al.)Schrödinger Cat States for Quantum Information Processing (H Jeong & T C Ralph)Polarization Squeezing and Entanglement (N Korolkova)Type-II Optical Parametric Oscillator: A Versatile Source of Quantum Correlations and Entanglement (J Laurat et al.)Accessing the Phase Quadrature of Intense Non-Classical Light State (O Glöckl et al.)Experimental Polarization Squeezing and Continuous Variable Entanglement via the Optical Kerr Effect (V Josse et al.)High-Fidelity Quantum Teleportation and a Quantum Teleportation Network (N Takei et al.)Quantum State Sharing with Continuous Variables (T Tyc et al.)Experimental Quantum Cloning with Continuous Variables (U L Andersen et al.)Quantum Imaging Techniques for Improving Information Extraction from Images (C Fabre et al.)Squeezed Light for Gravitational Wave Detectors (R Schnabel)Continuous Variables for Single Photons (L Zhang et al.)Experimental Non-Gaussian Manipulation of Continuous Variables (J Wenger et al.)Continuous-Variable Quantum-State Tomography of Optical Fields and Photons (A I Lvovsky & M G Raymer)Gaussian Description of Continuous Measurements on Continuous Variable Quantum Systems (L B Madsen & K Mølmer)Quantum State Preparation of Spin Ensembles by Continuous Measurement and Feedback (R van Handel et al.)Real-Time Quantum Feedback Control with Cold Alkali Atoms (J M Geremia)Deterministic Quantum Interface Between Light and Atomic Ensembles (K Hammerer et al.)Long Distance Quantum Communication with Atomic Ensembles (C W Chou et al.)Decoherence and Decoherence Suppression in Ensemble-Based Quantum Memories for Photons (M Fleischhauer & C Mewes) Readership: Researchers and students specializing in quantum information systems described by continuous variables; as supporting material for advanced university courses in the field.

Author: Bozena Jaskorzynska
Publisher: SPIE-International Society for Optical Engineering
ISBN:
Category : Science
Languages : en
Pages : 462

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Book Description
Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.

Author: Alberto Peruzzo
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
Quantum information science provides new paradigms of communication, computation and measurement; such as perfectly secure quantum key distribution, intrinsic parallel computation and increased precision measurement by beating the standard quantum limit. The first implementation of optical quantum circuits whose performance exceeds that required for fault tolerance quantum computation is presented. Near- unit fidelity non-classical interference and entangling operations are demonstrated in integrated photonic waveguides fabricated on silica on silicon chips. Improvement of about 5% in the measured performance is the result of perfectly indistinguishable photon pairs produced from an SPDC source. These integrated devices, combined with high efficiency single photon sources and detectors, will be the building block for future demonstrations of quantum information. Operation of quantum optics circuits with superconducting nanowire single photon detectors (SNSPD) is reported. The lower jitter of SNSPDs compared to silicon single photon avalanche photodiodes (SPADs) enables the measurement of higher visibility non-classical interference on directional couplers, CNOT gates and Mach-Zehnder interferometer. SSPDs are fast, low noise and can detect single photons in a broad range of wavelengths. Recent studies show very high detection efficiency making these devices promising for future photonic quantum information processing. Quantum interference in multi-mode interference (MMI) devices is reported for the first time. These devices allow the design of NxM splitters with superior performances, excellent tolerance to polarization and wavelength variations and relaxed fabrication requirements compared to the other main beam splitting technology, the directional couplers. However, to date, there have been no demonstrations of quantum interference in MMI devices (one may be concerned that multi-mode operation could prevent or perturb such interference). It is found that that the quantum interference visibility is significantly lower than that of a directional coupler with the same source. A major reason for the reduced visibility is the coherence length of the photons, which is set by the large-band interference filters. Since the different modes see different effective refractive indices within the interferometer, a jitter is 'introduced which allows distinguishability between the photons. To overcome this problem a narrower filter was introduced in one of the channels between the device and the detector, i.e. not affecting the source. This quantum erasure technique increases the detected indistinguishability of the photons, showing a high visibility and confirming that timing jitter limits quantum interference with large filters. The first observation of quantum walks of two indistinguishable particles is reported. Quantum walks offer new tools for simulating physical, chemical and biological systems, performing universal quantum computation and studying generalized quantum interference. Experimental demonstrations to date have shown single particle quantum walks; the observable dynamics of which can be fully explained with classical wave mechanics and experimentally mimicked using, for example, bright laser light. To observe uniquely quantum mechanical correlations in quantum walks, the propagation of two single, indistinguishable photons in an array of 21 waveguides in a silicon oxynitride chip is measured. The simultaneous walk of two photons on a graph simulate the walk of a single photon on a larger graph; the graph growing exponentially when linearly increasing the number of photons. These results violate classical bounds and cannot be efficiently simulated or described using classical mechanics. It is shown that the output strongly depends on the input state. Previous quantum optical work has highlighted the promise of monolithic integrated optics for quantum information science. This demonstration takes advantage of the intrinsic stability of photonic waveguide circuits to perform two-photon interference on a large scale. The results presented in this Thesis demonstrate the potential of integrated quantum photonic technology for quantum information applications, in particular quantum computation and quantum simulation.

Author: Dimitris G. Angelakis
Publisher: IOS Press
ISBN: 9781586036119
Category : Computers
Languages : en
Pages : 380

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Book Description
The knowledge that nature can be coherently controlled and manipulated at the quantum level was perceived as both a powerful stimulus and one of the greatest challenges facing experimental physics. Fortunately the exploration of quantum technology has many staging posts along the way, each of which will yield scientifically and technologically useful results and some of them are described in this volume.