While quantum theory has been used to study the physical universe with great profit, both intellectual and financial, ever since its discovery eighty-five years ago, over the last fifty years we have found out more and more about the theory itself, and what it tells us about the universe. It seems we may have to accept non-locality - cause and effect may be light-years apart; loss of realism - nature may be fundamentally probabilistic; and non-determinism - it seems that God does play dice! This book, totally up-to-date and written by an expert in the field, explains the emergence of our new perspective on quantum theory, but also describes how the ideas involved in this re-evaluation led seamlessly to a totally new discipline - quantum information theory. This discipline includes quantum computation, which is able to perform tasks quite out of the range of other computers; the totally secure algorithms of quantum cryptography; and quantum teleportation - as part of science fact rather than science fiction. The book is the first to combine these elements, and will be of interest to anybody interested in fundamental aspects of science and their application to the real world.
This thesis breaks new ground in the physics of photonic circuits for quantum optical applications. The photonic circuits are based either on ridge waveguides or photonic crystals, with embedded quantum dots providing the single qubit, quantum optical emitters. The highlight of the thesis is the first demonstration of a spin-photon interface using an all-waveguide geometry, a vital component of a quantum optical circuit, based on deterministic single photon emission from a single quantum dot. The work makes a further important contribution to the field by demonstrating the effects and limitations that inevitable disorder places on photon propagation in photonic crystal waveguides, a further key component of quantum optical circuits. Overall the thesis offers a number of highly novel contributions to the field; those on chip circuits may prove to be the only means of scaling up the highly promising quantum-dot-based quantum information technology.
On October 2, 1881, a small group of men met in the basement of a church in New Haven, Connecticut. Gathered together by their priest, Father Michael J. McGivney, they formed a fraternal society called the Knights of Columbus in honor of the Catholic explorer who had brought Christianity to the New World. Originally conceived as a mutual aid society, the Knights of Columbus was dedicated to helping Catholic families in need— people in the community who, in many cases, were excluded from unions and other organizations that provided social services to so many others. The members also vowed to be defenders of their nation and their faith. Well over a century later, the Knights of Columbus is going strong and, with over 1.8 million members, it has extended its reach to embrace people around the world. Through fascinating text and photographs, The Knights of Columbus: An Illustrated History tells the story of an organization that, through war and peace, has remained “the strong right arm of the Church,” bringing help and hope to people everywhere.
52 readings, each with a scripture passage and prayer, from one of our most loved and respected Christian leaders and speakers. Each reading contains a story, often startling and arresting, from Andrew’s astonishingly eventful ministry, blended with his reflections on life and faith.
This will help us customize your experience to showcase the most relevant content to your age group
Please select from below
Login
Not registered?
Sign up
Already registered?
Success – Your message will goes here
We'd love to hear from you!
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.