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"Quantum Optics"
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A quantum ticking self-oscillator using delayed feedback
Self-sustained oscillators (SSOs) is a commonly used method to generate classical clock signals and SSOs using delayed feedback have been developed commercially which possess ultra-low phase noise and drift. Research into the development of quantum self-oscillation, where one can also have a periodic and regular output tick , that can be used to control quantum and classical devices has received much interest and quantum SSOs so far studied suffer from phase diffusion which leads to the smearing out of the quantum oscillator over the entire limit cycle in phase space seriously degrading the system’s ability to perform as a self-oscillation. In this paper, we explore quantum versions of time-delayed SSOs, which has the potentials to develop a ticking quantum clock. We first design a linear quantum SSO which exhibits perfect oscillation without phase diffusion. We then explore a nonlinear delayed quantum SSO but find it exhibits dephasing similar to previously studied non-delayed systems.
Journal Article
Fabrication limits of waveguides in nonlinear crystals and their impact on quantum optics applications
Waveguides in nonlinear materials are a key component for photon pair sources and offer promising solutions to interface quantum memories through frequency conversion. To bring these technologies closer to every-day life, it is still necessary to guarantee a reliable and efficient fabrication of these devices. Therefore, a thorough understanding of the technological limitations of nonlinear waveguiding devices is paramount. In this paper, we study the link between fabrication errors of waveguides in nonlinear crystals and the final performance of such devices. In particular, we first derive a mathematical expression to qualitatively assess the technological limitations of any nonlinear waveguide. We apply this tool to study the impact of fabrication imperfections on the phasematching properties of different quantum processes realized in titanium-diffused lithium niobate waveguides. Finally, we analyse the effect of waveguide imperfections on quantum state generation and manipulation for few selected cases. Studying the impact of fabrication errors on the waveguide widths, we find that the presence of correlated noise plays a major role in the degradation of the phasematching and we suggest different possible strategies to reduce the impact of fabrication imperfections.
Journal Article
Fundamentals of physics. II, Electromagnetism, optics, and quantum mechanics
R. Shankar, a well-known physicist and contagiously enthusiastic educator, was among the first to offer a course through the innovative Open Yale Course program. His popular online video lectures on introductory physics have been viewed over a million times. In this second book based on his online Yale course, Shankar explains essential concepts, including electromagnetism, optics, and quantum mechanics. The book begins at the simplest level, develops the basics, and reinforces fundamentals, ensuring a solid foundation in the principles and methods of physics.
Book
Introduction to adaptive lenses
\"This is the first book to address the fundamental operation principles, device characteristics, and potential applications of various types of adaptive lenses. Setting out from basic material properties to device structures and performance, this volume covers solid lens, membrane lens, electro-wetting lens, dielectric lens, mechanical-wetting lens, and liquid crystal lenses. Potential applications of these adaptive lenses are also investigated, including image processing and zooming, optical communications, and biomedical imaging. This is an important reference for optical engineers, research scientists, graduate students and undergraduate seniors\"--
eBook
Slow light : invisibility, teleportation and other mysteries of light
\"Slow Light is a popular treatment of today's astonishing breakthroughs in the science of light. Even though we don't understand light's quantum mysteries, we can slow it to a stop and speed it up beyond its Einsteinian speed limit, 186,000 miles/sec; use it for quantum telecommunications; teleport it; manipulate it to create invisibility; and perhaps generate hydrogen fusion power with it. All this is lucidly presented for non-scientists who wonder about teleportation, Harry Potter invisibility cloaks, and other fantastic outcomes. Slow Light shows how the real science and the fantasy inspire each other, and projects light's incredible future.\" -- Back Cover.
Book
Conjugate Construction of Quantum Optics: From Foundations to Applications
This book includes a wide range of topics from basic foundations to advanced applications. Different chapters may be suitable for special groups. Part I is useful for the levels of researchers and graduate students. Conjugate complex vector operators, symmetry/anti-symmetry brackets, Lie-Dirac-conjugate algebra, conjugate combinatorial lattices are suitable for basic researchers on logic, probability, statistics, complex foundation, parallel synchronous time orders/modeling/analysis, complex analysis, complex geometric foundation, measures on mathematical foundation, combinatorial mathematics, meta-mathematics, quantum logic, and combinatorial group theory. Part II is useful for the general audience on history development of complex conjugate numbers and quantum entanglement paradoxes. Richer visual maps of entangled experimental and simulated results are valuable for application researchers and engineers, senior college students and postgraduate students in quantum information, quantum communication, quantum computing, quantum computers. The future applications are suitable for general researchers, engineers, postgraduate, and senior undergraduate students.
eBook