Towards a Quantum Network with Atomic Ensembles
Author: Chin-wen Chou
Publisher:
Published: 2006
Total Pages: 520
ISBN-13:
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Quantum Network with Multiple Cold Atomic Ensembles
Author: Bo Jing
Publisher: Springer Nature
Published: 2022-03-16
Total Pages: 197
ISBN-13: 981190328X
DOWNLOAD EBOOKThis book highlights the novel research in quantum memory networking, especially quantum memories based on cold atomic ensembles. After discussing the frontiers of quantum networking research and building a DLCZ-type quantum memory with cold atomic ensemble, the author develops the ring cavity enhanced quantum memory and demonstrates a filter-free quantum memory, which significantly improves the photon-atom entanglement. The author then realizes for the first time the GHZ-type entanglement of three separate quantum memories, a building block of 2D quantum repeaters and quantum networks. The author also combines quantum memories and time-resolved measurements, and reports the first multiple interference of three single photons with different colors. The book is of good reference value for graduate students, researchers, and technical personnel in quantum information sciences.
Quantum Networking with Atomic Ensembles
Author: Dzmitry Matsukevich
Publisher:
Published: 2006
Total Pages:
ISBN-13:
DOWNLOAD EBOOKQuantum communication networks enable secure transmission of information between remote sites. However, at present, photon losses in the optical fiber limit communication distances to less than 150 kilometers. The quantum repeater idea allows extension of these distances. In practice, it involves the ability to store quantum information for a long time in atomic systems and coherently transfer quantum states between matter and light. Previously known schemes involved atomic Raman transitions in the UV or near-infrared and suffered from severe loss in optical fiber that precluded long-distance quantum communication. In this thesis a practical quantum telecommunication scheme based on cascade atomic transitions is proposed, with particular reference to cold alkali metal ensembles. Within this proposal, essential building blocks for a quantum network architecture are demonstrated experimentally, including storage and retrieval of single photons transmitted between remote quantum memories, collapses and revivals of quantum memories, deterministic generation of single photons via conditional quantum evolution, quantum state transfer between atomic and photonic qubits, entanglement of atomic and photonic qubits, entanglement of remote atomic qubits, and entanglement of a pair of 1530 nm and 780 nm photons. These results pave the way for construction of a realistic quantum repeater for long distance quantum communication.
Polarization Entanglement Storage in Ensemble-based Atomic Memories
Author: Bhaskar Mookerji
Publisher:
Published: 2011
Total Pages: 85
ISBN-13:
DOWNLOAD EBOOKQuantum networks enable the long-distance communication of quantum states through teleportation, but require, in advance, the robust distribution of entanglement between relevant parties. Engineering these networks requires quantum interconnects, which convert quantum states in one physical system to those of another reversibly, and with high fidelity. In this thesis, we describe implementations of long-distance quantum communication networks using polarization entanglement and atomic ensembles. We concisely describe the interactions of a quantum optical field with a heralding atomic ensemble, accounting for multiple-pair events at entanglement generation, as well as finite transmission and photodetection efficiencies under number-resolving and non-resolving photodetection schemes. Using these results, we perform a detailed quantitative performance analysis of quantum networks that distribute and swap entanglement.
Manipulating Quantum Entanglement with Atomic Ensembles and with Atoms in Optical Superlattices
Author:
Publisher:
Published: 2014
Total Pages: 185
ISBN-13:
DOWNLOAD EBOOKIntegrated Silicon-Metal Systems at the Nanoscale
Author: Munir H. Nayfeh
Publisher: Elsevier
Published: 2023-04-12
Total Pages: 568
ISBN-13: 044318674X
DOWNLOAD EBOOKIntegrated Silicon-Metal Systems at the Nanoscale: Applications in Photonics, Quantum Computing, Networking, and Internet is a comprehensive guide to the interaction, materials and functional integration at the nanoscale of the silicon-metal binary system and a variety of emerging and next-generation advanced device applications, from energy and electronics, to sensing, quantum computing and quantum internet networks. The book guides the readers through advanced techniques and etching processes, combining underlying principles, materials science, design, and operation of metal-Si nanodevices. Each chapter focuses on a specific use of integrated metal-silicon nanostructures, including storage and resistive next-generation nano memory and transistors, photo and molecular sensing, harvest and storage device electrodes, phosphor light converters, and hydrogen fuel cells, as well as future application areas, such as spin transistors, quantum computing, hybrid quantum devices, and quantum engineering, networking, and internet. Provides detailed coverage of materials, design and operation of metal-Si nanodevices Offers a step-by-step approach, supported by principles, methods, illustrations and equations Explores a range of cutting-edge emerging applications across electronics, sensing and quantum computing
Broad Bandwidth and High Dimensional Quantum Memory Based on Atomic Ensembles
Author: Dong-Sheng Ding
Publisher: Springer
Published: 2017-12-26
Total Pages: 136
ISBN-13: 9811074763
DOWNLOAD EBOOKThis thesis presents an experimental study of quantum memory based on cold atomic ensembles and discusses photonic entanglement. It mainly focuses on experimental research on storing orbital angular momentum, and introduces readers to methods for storing a single photon carried by an image or an entanglement of spatial modes. The thesis also discusses the storage of photonic entanglement using the Raman scheme as a step toward implementing high-bandwidth quantum memory. The storage of photonic entanglement is central to achieving long-distance quantum communication based on quantum repeaters and scalable linear optical quantum computation. Addressing this key issue, the findings presented in the thesis are very promising with regard to future high-speed and high-capacity quantum communications.
Towards a Quantum Network with Waveguide Quantum Electrodynamics
Author: Aziza Almanakly
Publisher:
Published: 2022
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKOver the past twenty years, the field of quantum computing has progressed from the investigation of individual quantum systems towards the implementation of many-qubit processors. Distributing information processing over a quantum network consisting of many nodes that communicate via itinerant photons is one potential framework for achieving modular and extensible quantum computation. Systems of superconducting qubits strongly coupled to a continuum of photonic modes in 1D coplanar waveguides, described by the formalism known as waveguide Quantum Electrodynamics (wQED), are emerging as a promising platform for quantum communication. In this work, we develop a quantum module comprised of superconducting qubits strongly coupled to a 1D waveguide that can bidirectionally emit and absorb propagating microwave photons on-demand. These modules can be tiled in series along a waveguide to form an all-to-all, extensible quantum network.
Proceedings of the XVIII International Conference on Atomic Physics
Author: Hossein R. Sadeghpour
Publisher: World Scientific
Published: 2003
Total Pages: 377
ISBN-13: 9812705090
DOWNLOAD EBOOKThis important proceedings volume highlights the major scientific achievement of the last decade in atomic physics, namely the creation of the gaseous Bose-Einstein condensate, which was featured prominently at the XVIII International Conference on Atomic Physics (ICAP2002). Two recipients of the 2001 Nobel Prize delivered lectures at the meeting. Among the topics discussed were novel processes leading to degenerate Fermi gases in atom traps, creation of cold molecules, condensates in optical lattices, atoms in intense fields, tests of fundamental symmetries, quantum control and information, time and frequency standards.
Quantum Information with Continuous Variables of Atoms and Light
Author: N. J. Cerf
Publisher: World Scientific
Published: 2007
Total Pages: 629
ISBN-13: 1860948162
DOWNLOAD EBOOKQuantum information describes the new field which bridges quantum physics and information science. The quantum world allows for completely new architectures and protocols. While originally formulated in continuous quantum variables, the field worked almost exclusively with discrete variables, such as single photons and photon pairs. The renaissance of continuous variables came with European research consortia such as ACQUIRE (Advanced Coherent Quantum Information Research) in the late 1990s, and QUICOV (Quantum Information with Continuous Variables) from 2000OCo2003. The encouraging research results of QUICOV and the new conference series CVQIP (Continuous Variable Quantum Information Processing) triggered the idea for this book. This book presents the state of the art of quantum information with continuous quantum variables. The individual chapters discuss results achieved in QUICOV and presented at the first five CVQIP conferences from 2002OCo2006. Many world-leading scientists working on continuous variables outside Europe also contribute to the book.
