Author: Srivatsa Chakravarthi Publisher: ISBN: Category : Diamonds Languages : en Pages : 0
Book Description
Solid-state defect qubits are emerging as a promising candidate for quantum information processing. A fundamental resource for quantum information is entanglement between distant qubit nodes. Several quantum platforms have demonstrated entanglement generation between two physically separated qubits. However, a scalable platform to efficiently entangle multiple qubits remains elusive. Optically addressable defect qubits in diamond such as the nitrogen-vacancy (NV) and the silicon-vacancy (SiV) centers serve as the foundation of this thesis. The crucial components of optically interfaced defect qubit platforms are high-fidelity initialization, manipulation and readout of the qubit spin state accomplished using photoluminescence on an optical cycling transition. Here, we demonstrate significant steps towards realizing these components with a gallium phosphide (GaP) on diamond hybrid photonic platform. Utilizing individual defect qubits created by targeted defect formation process, experimental results on various defect-photonic coupling geometries are presented. Enhanced photon collection efficiency is measured for implanted NV centers coupled to disk-resonators and inverse-designed photon extraction devices. One of the main challenges encountered with coupled NV devices is the significant spectral instability. By performing large-scale automated resonant spectroscopy on the implanted NV centers, we determine that defect-surface interaction are the dominant source of the observed spectral instability. This leads us to consider the SiV center in diamond, which exhibits inherent protection from electric field fluctuations arising by its inversion symmetry within the diamond lattice. We demonstrate coupling of SiV centers to 1-D photonic crystal cavities (PhC) fabricated in GaP. To avoid perturbation of the diamond surface, we fabricate the PhCs on a separate chip and integrate with SiV centers in diamond by a stamp-transfer technique. Ancillary components for a single chip architecture such as single photon detectors, coherent frequency-conversion and passive photonics utilizing GaP are also demonstrated. These results establish GaP-on-diamond as a suitable platform for efficiently interfacing defects qubits with nanophotonic devices for scalable entanglement generation.
Author: Jeson Chen Publisher: ISBN: Category : Languages : en Pages :
Book Description
Solid-state technologies for quantum mechanical application require delicate materials that can operate stably with a long coherence time. Nitrogen vacancy (NV) centers in diamond is one of the most promising candidates for quantum physics, with applications such as single photon emitters, quantum computation, and magnetic sensor. To fully exploit the capability of defect centers in diamond for opto-electronics and quantum engineering, a number of improvements are needed. Among these are optimization of the NV centers yield in bulk diamond, nanodiamond (ND) size reduction, photocurrent study of the defect band-trap electronic structure in diamonds, and optimization of high-speed NV qubit control. For NV centers yield optimization, both the experimental magnetic sensitivity optimization as well as theoretical simulation of NV concentration are implemented. For NDs size characterization, we analyzed the size and photon autocorrelation function of NV in NDs after air oxidation treatment using a combined atomic force microscopy/confocal system. To study defect band-trap electronic structure in diamond, excitation and quenching as well as the recovery of the quenched photocurrent was investigated to better understand photocurrent dynamics in diamond. For qubit high-speed control optimization, a microwave pulse based on a nonlinear numeric solution of the Schrodinger equation is used to rotate the NV spin faster than the ordinary Rabi flip rate. Together these approaches promise to significantly speed up the development of diamond for quantum engineering applications. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155686
Author: Antoine Browaeys Publisher: Oxford University Press ISBN: 0192574094 Category : Science Languages : en Pages : 464
Book Description
This book gathers the lecture notes of courses given at Session CVII of the summer school in physics, entitled “Current Trends in Atomic Physics” and held in July, 2016 in Les Houches, France. Atomic physics provides a paradigm for exploring few-body quantum systems with unparalleled control. In recent years, this ability has been applied in diverse areas including condensed matter physics, high energy physics, chemistry and ultra-fast phenomena as well as foundational aspects of quantum physics. This book addresses these topics by presenting developments and current trends via a series of tutorials and lectures presented by international leading investigators.
Author: Sudip Kumar Batabyal Publisher: Elsevier ISBN: 0323908969 Category : Technology & Engineering Languages : en Pages : 512
Book Description
Carbon Quantum Dots for Sustainable Energy and Optoelectronics reviews the synthesis, properties, and applications of carbon nanodots. This book provides readers with an overview of the key advances in the development of carbon quantum dots including synthesis and surface engineering strategies such as pyrolysis-based synthesis, biomass-based synthesis, functionalization, and other methods toward large-scale development of these carbon nanomaterials. The emerging applications of carbon quantum dots in different fields, such as energy harvesting, energy storage, and biomedical applications, are thoroughly reviewed, emphasizing the impact of enhanced properties of carbon quantum dots for these applications. Carbon Quantum Dots for Sustainable Energy and Optoelectronics is suitable for graduate students, materials scientists, and engineers working in academia and industry. This book is also beneficial for the interdisciplinary community of researchers and practitioners working in the field of nanotechnology. - Introduces recent advances in the understanding of carbon quantum dots, including relevant synthesis and surface engineering strategies for their large-scale development - Provides an overview of the most relevant applications of carbon quantum dots for the development of sustainable technologies in optoelectronics and energy storage and production - Discusses future research directions and remaining challenges towards the commercial translation of carbon quantum dots
Author: Vasily Astratov Publisher: Springer Nature ISBN: 3030217221 Category : Science Languages : en Pages : 487
Book Description
This book presents the advances in super-resolution microscopy in physics and biomedical optics for nanoscale imaging. In the last decade, super-resolved fluorescence imaging has opened new horizons in improving the resolution of optical microscopes far beyond the classical diffraction limit, leading to the Nobel Prize in Chemistry in 2014. This book represents the first comprehensive review of a different type of super-resolved microscopy, which does not rely on using fluorescent markers. Such label-free super-resolution microscopy enables potentially even broader applications in life sciences and nanoscale imaging, but is much more challenging and it is based on different physical concepts and approaches. A unique feature of this book is that it combines insights into mechanisms of label-free super-resolution with a vast range of applications from fast imaging of living cells to inorganic nanostructures. This book can be used by researchers in biological and medical physics. Due to its logically organizational structure, it can be also used as a teaching tool in graduate and upper-division undergraduate-level courses devoted to super-resolved microscopy, nanoscale imaging, microscopy instrumentation, and biomedical imaging.
Author: Roberto Osellame Publisher: Springer Science & Business Media ISBN: 364223366X Category : Science Languages : en Pages : 485
Book Description
Femtosecond laser micromachining of transparent material is a powerful and versatile technology. In fact, it can be applied to several materials. It is a maskless technology that allows rapid device prototyping, has intrinsic three-dimensional capabilities and can produce both photonic and microfluidic devices. For these reasons it is ideally suited for the fabrication of complex microsystems with unprecedented functionalities. The book is mainly focused on micromachining of transparent materials which, due to the nonlinear absorption mechanism of ultrashort pulses, allows unique three-dimensional capabilities and can be exploited for the fabrication of complex microsystems with unprecedented functionalities.This book presents an overview of the state of the art of this rapidly emerging topic with contributions from leading experts in the field, ranging from principles of nonlinear material modification to fabrication techniques and applications to photonics and optofluidics.
Author: Federico Capasso Publisher: Walter de Gruyter GmbH & Co KG ISBN: 3110710684 Category : Technology & Engineering Languages : en Pages : 783
Book Description
This book provides a cutting-edge research overview on the latest developments in the field of Optics and Photonics. All chapters are authored by the pioneers in their field and will cover the developments in Quantum Photonics, Optical properties of 2D Materials, Optical Sensors, Organic Opto-electronics, Nanophotonics, Metamaterials, Plasmonics, Quantum Cascade lasers, LEDs, Biophotonics and biomedical photonics and spectroscopy.
Author: National Academies of Sciences, Engineering, and Medicine Publisher: National Academies Press ISBN: 0309494761 Category : Computers Languages : en Pages : 109
Book Description
Recent advancements in quantum-enabled systems present a variety of new opportunities and challenges. These technologies are important developments for a variety of computing, communications, and sensing applications. However, many materials and components relevant to quantum-enabled systems exist outside of the United States, and it is important to promote the development of assured domestic sources of materials, manufacturing capabilities, and expertise. The National Academies of Sciences, Engineering, and Medicine convened a 2-day workshop to explore implications and concerns related to the application of quantum-enabled systems in the United States. This workshop focused on quantum-enabled computing systems, quantum communications and networks, and quantum sensing opportunities. Participants explored the path to quantum computing, communications, and networks, opportunities for collaboration, as well as key gaps, supply chain concerns, and security issues. This publication summarizes the presentations and discussions from the workshop.
Author: National Academies of Sciences, Engineering, and Medicine Publisher: National Academies Press ISBN: 030947969X Category : Computers Languages : en Pages : 273
Book Description
Quantum mechanics, the subfield of physics that describes the behavior of very small (quantum) particles, provides the basis for a new paradigm of computing. First proposed in the 1980s as a way to improve computational modeling of quantum systems, the field of quantum computing has recently garnered significant attention due to progress in building small-scale devices. However, significant technical advances will be required before a large-scale, practical quantum computer can be achieved. Quantum Computing: Progress and Prospects provides an introduction to the field, including the unique characteristics and constraints of the technology, and assesses the feasibility and implications of creating a functional quantum computer capable of addressing real-world problems. This report considers hardware and software requirements, quantum algorithms, drivers of advances in quantum computing and quantum devices, benchmarks associated with relevant use cases, the time and resources required, and how to assess the probability of success.
Author: Srivatsa Chakravarthi
Author: Jeson Chen
Author: Antoine Browaeys
Author: Johannes Lang
Author: Sudip Kumar Batabyal
Author: Vasily Astratov
Author: Roberto Osellame
Author: Federico Capasso
Author: National Academies of Sciences, Engineering, and Medicine
Author: National Academies of Sciences, Engineering, and Medicine