Quantum Information Enabled Neutron Interferometry
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Quantum Information Enabled Neutron Interferometry
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Author : Joachim Nsofini
language : en
Publisher:
Release Date : 2017
Quantum Information Enabled Neutron Interferometry written by Joachim Nsofini and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Interferometry, Neutron categories.
Neutron interferometry with its ability to encode and extract information provides a test bed for quantum mechanics and precise measurement of physical quantities of significant importance in physics. However, this significant key investigative technique is weakened by its very fragile nature; neutron interferometry has proven to be highly sensitive to environmental noise. Once brought to its optimal state, the use of neutron interferometry enabled with quantum information, represents a milestone. Indeed a realization of high-quality neutron interferometry could pave a way to probe materials research such as probing properties water in proteins and topological materials. Thus understanding and solving the sensitivity of neutron interferometers to noise is a key step toward possible applications. This is the core of the work done in this Thesis. We incorporated two theoretical techniques developed for quantum information sciences into the construction of a new polarized neutron interferometry beam line: The technique of quantum error correction and the technique of open quantum system. One focus of this work is to report on the design, the construction as well as the characteristic features of this beamline. This thesis involves experimental data, showing how the neutron beam intensity at the exit of a three-blade neutron interferometer can be controlled by the interferometer blades thickness. Secondly, is also presents an alternative and simplified quantum information approach to dynamical diffraction, based on repeated application of a coherent beam- splitting unitary at coarse-grained lattice sites. Demanding translational invariance added to a computationally tractable number of sites in the coarse-graining reproduced many results typical of standard dynamical diffraction theory and experiments. Building on that, a proposal for a new five-blade neutron interferometer is presented and its robustness to noise, resulting from dynamical diffraction together with low-frequency external mechanical vibration is discussed. Steps ahead in our work, neutron interferometry may be improved as well as adapted to more applications by incorporating the spin and orbital degrees of freedom to a path-based ivinterferometer. In this concern, we propose a method to prepare the spin-orbit state by passing a polarized neutron beam through a quadrupole magnetic field. Initially designed for a beam the size of a coherent length, we extend this method to work for spatially displaced beams by using linear magnetic gradients.
Structured Beams As Quantum Probes
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Author : Dusan Sarenac
language : en
Publisher:
Release Date : 2018
Structured Beams As Quantum Probes written by Dusan Sarenac and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
This thesis describes several projects under the common theme of generating and manipulating the spatial quantum phase structure of matter and electromagnetic waves. Experiments dealing with the following topics are addressed: perfect crystal neutron interferometry, far-field phase-grating moire interferometry, orbital angular momentum (OAM), spin-orbit states, and lattices of spin-orbit states. The first focus of the thesis is describing the work related to the construction of a new beamline dedicated to quantum information related neutron interferometry experiments at the National Institute of Standards and Technology's Center for Neutron Research. This includes the development of the necessary environmental isolation, phase stability, and temperature isolation mechanisms; and the installation and optimization of spin polarization elements. The new beamline is now operational and it is currently one of only three neutron interferometry facilities in the world. The second focus of the thesis is to describe the development and characterization of far-field phase-grating moire neutron interferometry. This technique enables studies that are complimentary to those of perfect crystal neutron interferometry experiments. It may be used to probe structured materials and characterize neutron interactions with potential gradients. A two phase-grating moire neutron interferometer was developed, characterized, and optimized. This setup was then employed to probe the microstructure of a monodisperse suspension of 2 um diameter polystyrene spheres. Furthermore, a three phase-grating moire neutron interferometer was developed and characterized. This unique setup promises a wide range of impactful experiments from far-field imaging of material substructure to fundamental physics. The third focus of the thesis is to describe neutron OAM. These experiments revolve around the preparation and characterization of an azimuthally varying phase profile. The demonstration of neutron OAM using a perfect crystal neutron interferometer is described, where a spiral phase plate was used to induce OAM in one of the paths of the interferometer. Furthermore, a modified setup was used to perform neutron holography of a macroscopic object which induces an azimuthally varying phase profile. These methods provide a new tool for interferometric testing of neutron optics and the characterization of coherence of neutron beams. The last focus of the thesis is to describe matter wave and optical spin correlated OAM (spin-orbit) states. Methods to prepare neutron spin-orbit states via special geometries of magnetic fields are proposed. The preparation, entanglement characterization, and proposed experimental verification of such states are described in detail. Furthermore, a method which is capable of preparing lattices of optical and neutron spin-orbit states is introduced and described. This method utilizes novel optical and neutron devices and it is based on coherent averaging and spatial control methods borrowed from nuclear magnetic resonance. The experimental preparation and characterization of optical lattices of spin-orbit states is described in detail.
Coherent Control Of Neutron Interferometry
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Author : Dmitry A. Pushin
language : en
Publisher:
Release Date : 2006
Coherent Control Of Neutron Interferometry written by Dmitry A. Pushin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
In this thesis, several novel techniques are proposed and demonstrated for measuring the coherent properties of materials and testing aspects of quantum information processing using a single crystal neutron interferometer. In particular we introduce methods for reciprocal space encoding of spatial information systematically in a neutron interferometer. First, a proof of principle experiment is conducted for coherent reciprocal space neutron imaging. This newly proposed technique overcomes the limitation of spacial resolution of current two dimensional neutron detectors. Second, an experiment to measure the vertical coherent length of a neutron interferometer is reported, which extends the previously achieved path separation. Third, we propose a new interferometry geometry that reduces the sensitivity of the neutron interferometer to environmental vibrational disturbances. The method is based on a quantum error compensating algorithm. Finally, a new method that is capable of measuring the autocorrelation function of a sample is proposed. This new technique can extend the capability of traditional neutron scattering experiments. All experiments are conducted at the neutron interferometry facility at the National Institute of Standards and Technology (NIST).
Quantum Interferometry
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Author : Francesco De Martini
language : en
Publisher: John Wiley & Sons
Release Date : 1996
Quantum Interferometry written by Francesco De Martini and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Interferometry categories.
One century after the discovery of the quanta and their basic properties, the interdisciplinary science of ´Quantum Interferometry´ retains its original role of being the crossing road between theoretical analysis and interpretation, physics and philosophy, settlement of principles and the prospect for new endeavours. In recent decades the technological achievements have allowed the realization of many earlier gedanken experiments. This has cleared up many issues of previous debate on the foundations by opening, at the same time, new fields of investigation on still subtler aspects of the theory. Furthermore, this evolution has stimulated the birth of new important research of more technological character aimed at the development of practical devices of future general interest, e.g. the new sciences of ´Atom–Optics´, the ´Cavity QED´ in cavities and microcavities, solid–state nanostructures and ´Quantum Computation´. This book collects the texts of lectures given by foremost experts concerning the various modern aspects of ´Quantum Interferometry´ at an Adriatico Conference held, with the same title, in Trieste in March 1996.
Neutron Interferometry
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Author : Helmut Rauch
language : en
Publisher:
Release Date : 2015
Neutron Interferometry written by Helmut Rauch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Interferometry, Neutron categories.
The quantum interference of de Broglie matter waves is probably one of the most startling and fundamental aspects of quantum mechanics. It continues to tax our imaginations and leads us to new experimental windows on nature. Quantum interference phenomena are vividly displayed in the wideassembly of neutron interferometry experiments, which have been carried out since the first demonstration of a perfect silicon crystal interferometer in 1974. Since the neutron experiences all four fundamental forces of nature (strong, weak, electromagnetic, and gravitational), interferometry withneutrons provides a fertile testing ground for theory and precision measurements. Many Gedanken experiments of quantum mechanics have become real due to neutron interferometry.Quantum mechanics is a part of physics where experiment and theory are inseparably intertwined. This general theme permeates the second edition of this book. It discusses more than 40 neutron interferometry experiments along with their theoretical motivations and explanations. The basic ideas andresults of interference experiments related to coherence and decoherence of matter waves and certain post-selection variations, gravitationally induced quantum phase shifts, Berry`s geometrical phases, spinor symmetry and spin superposition, and Bell's inequalities are all discussed and explained inthis book. Both the scalar and vector Aharonov-Bohm topological interference effects and the neutron version of the Sagnac effect are presented in a self-contained and pedagogical way. Interferometry with perfect crystals, artificial lattices, and spin-echo systems are also topics of this book. Itincludes the theoretical underpinning as well as connections to other areas of experimental physics, such as quantum optics, nuclear physics, gravitation, and atom interferometry. The observed phase shifts due to the Earth's gravity and rotation indicate a close connection to relativity theory.Neutron interferometry can be considered as a central technique of quantum optics with massive particles. It has stimulated the development of interferometry with atoms, molecules and clusters.The book is written in a style that will be suitable at the senior undergraduate and beginning of graduate level. It will interest and excite many students and researchers in neutron, nuclear, quantum, gravitational, optical, and atomic physics. Lecturers teaching courses in modern physics andquantum mechanics will find a number of interesting and historic experiments they may want to include in their lectures.
Foundations Of Quantum Mechanics In The Light Of New Technology
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Author : Sachio Ishioka
language : en
Publisher: World Scientific
Release Date : 2009
Foundations Of Quantum Mechanics In The Light Of New Technology written by Sachio Ishioka and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Science categories.
This book is the proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology (ISQMOCoTOKYO''08) which aims to link the recent advances in technology with fundamental problems in quantum mechanics. It also discusses fundamental problems and issues in quantum physics and places a special emphasis on OC Quantum Coherence and DecoherenceOCO. The proceedings included a special lecture by Prof C N Yang, OC Pseudopotential Method in Cold Atom ResearchOCO, and 75 refereed papers covering the wide range of quantum physics: cold atoms and molecules; spin-Hall effect and anomalous Hall effect; magnetic domain wall dynamics and spin-related phenomena; Dirac fermions in condensed matter; quantum dot systems; entanglement and quantum information processing, qubit manipulations; mechanical properties of confined geometry; precise measurements; novel properties of nano-systems; and fundamental problems in quantum physics. The book will not only serve as a good reference for experts on quantum coherence and decoherence, but also as an introduction for newcomers to this field."
Quantum Interferometry Proceedings Of The Adrratico Conferencer
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Author : Francesco De Martini
language : en
Publisher: World Scientific
Release Date : 1994-09-09
Quantum Interferometry Proceedings Of The Adrratico Conferencer written by Francesco De Martini and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-09-09 with categories.
This book contains an up-to-date account of the experimental status of one of the fundamental and intriguing topic of contemporary physics, the one concerned with the concepts of Bohr's complementarity, non-locality and EPR non-separability of quantum objects. Different aspects, both conceptual and technical, of the complex fenomenology involving different quantum particles (neutrons, electrons, photons, atoms) are illustrated with a unifying perpective that enlightens the underlying basic processes. The book includes works by H Rauch (Vienna), S Haroche (Paris), D Greenberger (New York), A Tonomura (Tokyo), L Mandel (Rochester), H Walther (Munich), D Pritchard (MIT), R Chiao (Berkeley), J Franson (Baltimore), G Ghirardi (Trieste) and many others.
Neutron Interferometry And The Non Ergodic Interpretation Of Quantum Mechanics
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Author : Vincent Buonomano
language : en
Publisher:
Release Date : 1987
Neutron Interferometry And The Non Ergodic Interpretation Of Quantum Mechanics written by Vincent Buonomano and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Principles Of Quantum Computation And Information A Comprehensive Textbook
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Author : Benenti Giuliano
language : en
Publisher: World Scientific
Release Date : 2018-12-12
Principles Of Quantum Computation And Information A Comprehensive Textbook written by Benenti Giuliano and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-12 with Science categories.
Quantum computation and information is a rapidly developing interdisciplinary field. It is not easy to understand its fundamental concepts and central results without facing numerous technical details. This book provides the reader with a useful guide. In particular, the initial chapters offer a simple and self-contained introduction; no previous knowledge of quantum mechanics or classical computation is required.Various important aspects of quantum computation and information are covered in depth, starting from the foundations (the basic concepts of computational complexity, energy, entropy, and information, quantum superposition and entanglement, elementary quantum gates, the main quantum algorithms, quantum teleportation, and quantum cryptography) up to advanced topics (like entanglement measures, quantum discord, quantum noise, quantum channels, quantum error correction, quantum simulators and tensor networks).It can be used as a broad range textbook for a course in quantum information and computation, both for upper-level undergraduate students and for graduate students. It contains a large number of solved exercises, which are an essential complement to the text, as they will help the student to become familiar with the subject. The book may also be useful as general education for readers who want to know the fundamental principles of quantum information and computation and who have the basic background acquired from their undergraduate course in physics, mathematics, or computer science, as well as for researchers interested in some of the latest spin-off of the field, including the use of quantum information in the theories of many-body systems.
A Short Introduction To Quantum Information And Quantum Computation
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Author : Michel Le Bellac
language : en
Publisher: Cambridge University Press
Release Date : 2006-06-15
A Short Introduction To Quantum Information And Quantum Computation written by Michel Le Bellac and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-06-15 with Science categories.
Quantum information and computation is a rapidly expanding and cross-disciplinary subject. This book, first published in 2006, gives a self-contained introduction to the field for physicists, mathematicians and computer scientists who want to know more about this exciting subject. After a step-by-step introduction to the quantum bit (qubit) and its main properties, the author presents the necessary background in quantum mechanics. The core of the subject, quantum computation, is illustrated by a detailed treatment of three quantum algorithms: Deutsch, Grover and Shor. The final chapters are devoted to the physical implementation of quantum computers, including the most recent aspects, such as superconducting qubits and quantum dots, and to a short account of quantum information. Written at a level suitable for undergraduates in physical sciences, no previous knowledge of quantum mechanics is assumed, and only elementary notions of physics are required. The book includes many short exercises, with solutions available to instructors through [email protected].