Quantum Trajectories and Measurements in Continuous Time - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Quantum Trajectories and Measurements in Continuous Time write by Alberto Barchielli. This book was released on 2009-07-21. Quantum Trajectories and Measurements in Continuous Time available in PDF, EPUB and Kindle. This course-based monograph introduces the reader to the theory of continuous measurements in quantum mechanics and provides some benchmark applications. The approach chosen, quantum trajectory theory, is based on the stochastic Schrödinger and master equations, which determine the evolution of the a-posteriori state of a continuously observed quantum system and give the distribution of the measurement output. The present introduction is restricted to finite-dimensional quantum systems and diffusive outputs. Two appendices introduce the tools of probability theory and quantum measurement theory which are needed for the theoretical developments in the first part of the book. First, the basic equations of quantum trajectory theory are introduced, with all their mathematical properties, starting from the existence and uniqueness of their solutions. This makes the text also suitable for other applications of the same stochastic differential equations in different fields such as simulations of master equations or dynamical reduction theories. In the next step the equivalence between the stochastic approach and the theory of continuous measurements is demonstrated. To conclude the theoretical exposition, the properties of the output of the continuous measurement are analyzed in detail. This is a stochastic process with its own distribution, and the reader will learn how to compute physical quantities such as its moments and its spectrum. In particular this last concept is introduced with clear and explicit reference to the measurement process. The two-level atom is used as the basic prototype to illustrate the theory in a concrete application. Quantum phenomena appearing in the spectrum of the fluorescence light, such as Mollow’s triplet structure, squeezing of the fluorescence light, and the linewidth narrowing, are presented. Last but not least, the theory of quantum continuous measurements is the natural starting point to develop a feedback control theory in continuous time for quantum systems. The two-level atom is again used to introduce and study an example of feedback based on the observed output.
Quantum Trajectories
Quantum Trajectories - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Quantum Trajectories write by Pratim Kumar Chattaraj. This book was released on 2016-04-19. Quantum Trajectories available in PDF, EPUB and Kindle. The application of quantum mechanics to many-particle systems has been an active area of research in recent years as researchers have looked for ways to tackle difficult problems in this area. The quantum trajectory method provides an efficient computational technique for solving both stationary and time-evolving states, encompassing a large area o
Quantum Dynamics with Trajectories
Quantum Dynamics with Trajectories - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Quantum Dynamics with Trajectories write by Robert E. Wyatt. This book was released on 2006-05-28. Quantum Dynamics with Trajectories available in PDF, EPUB and Kindle. This is a rapidly developing field to which the author is a leading contributor New methods in quantum dynamics and computational techniques, with applications to interesting physical problems, are brought together in this book Useful to both students and researchers
Quantum Trajectories and Measurements in Continuous Time
Quantum Trajectories and Measurements in Continuous Time - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Quantum Trajectories and Measurements in Continuous Time write by Alberto Barchielli. This book was released on 2009-07-11. Quantum Trajectories and Measurements in Continuous Time available in PDF, EPUB and Kindle. Quantum trajectory theory is largely employed in theoretical quantum optics and quantum open system theory and is closely related to the conceptual formalism of quantum mechanics (quantum measurement theory). However, even research articles show that not all the features of the theory are well known or completely exploited. We wrote this monograph mainly for researchers in theoretical quantum optics and related ?elds with the aim of giving a self-contained and solid p- sentation of a part of quantum trajectory theory (the diffusive case) together with some signi?cant applications (mainly with purposes of illustration of the theory, but which in part have been recently developed). Another aim of the monograph is to introduce to this subject post-graduate or PhD students. To help them, in the most mathematical and conceptual chapters, summaries are given to ?x ideas. Moreover, as stochastic calculus is usually not in the background of the studies in physics, we added Appendix A to introduce these concepts. The book is written also for ma- ematicians with interests in quantum theories. Quantum trajectory theory is a piece of modern theoretical physics which needs an interplay of various mathematical subjects, such as functional analysis and probability theory (stochastic calculus), and offers to mathematicians a beautiful ?eld for applications, giving suggestions for new mathematical developments.
Quantum Measurement and Control
Quantum Measurement and Control - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Quantum Measurement and Control write by Howard M. Wiseman. This book was released on 2010. Quantum Measurement and Control available in PDF, EPUB and Kindle. Modern quantum measurement for graduate students and researchers in quantum information, quantum metrology, quantum control and related fields.
