Quantum Memory In Atomic Ensembles

Download Quantum Memory In Atomic Ensembles full books in PDF, epub, and Kindle. Read online Quantum Memory In Atomic Ensembles ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Broad Bandwidth and High Dimensional Quantum Memory Based on Atomic Ensembles

Author : Dong-Sheng Ding
Publisher : Springer
ISBN 13 : 9811074763
Total Pages : 136 pages
Book Rating : 4.8/5 (11 download)

DOWNLOAD NOW!

Book Synopsis Broad Bandwidth and High Dimensional Quantum Memory Based on Atomic Ensembles by : Dong-Sheng Ding

Download or read book Broad Bandwidth and High Dimensional Quantum Memory Based on Atomic Ensembles written by Dong-Sheng Ding and published by Springer. This book was released on 2017-12-26 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 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.

Quantum Network with Multiple Cold Atomic Ensembles

Author : Bo Jing
Publisher : Springer Nature
ISBN 13 : 981190328X
Total Pages : 197 pages
Book Rating : 4.8/5 (119 download)

DOWNLOAD NOW!

Book Synopsis Quantum Network with Multiple Cold Atomic Ensembles by : Bo Jing

Download or read book Quantum Network with Multiple Cold Atomic Ensembles written by Bo Jing and published by Springer Nature. This book was released on 2022-03-16 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 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 Memory in Atomic Ensembles

Author : Joshua Nunn
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

DOWNLOAD NOW!

Book Synopsis Quantum Memory in Atomic Ensembles by : Joshua Nunn

Download or read book Quantum Memory in Atomic Ensembles written by Joshua Nunn and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Quantum memory with atomic ensembles of rubidium and single photons for long distance quantum communication

Author : Thorsten Strassel
Publisher :
ISBN 13 :
Total Pages : 183 pages
Book Rating : 4.:/5 (37 download)

DOWNLOAD NOW!

Book Synopsis Quantum memory with atomic ensembles of rubidium and single photons for long distance quantum communication by : Thorsten Strassel

Download or read book Quantum memory with atomic ensembles of rubidium and single photons for long distance quantum communication written by Thorsten Strassel and published by . This book was released on 2008 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Optical Quantum Memories with Cold Atomic Ensembles

Author : Adrien Nicolas
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (94 download)

DOWNLOAD NOW!

Book Synopsis Optical Quantum Memories with Cold Atomic Ensembles by : Adrien Nicolas

Download or read book Optical Quantum Memories with Cold Atomic Ensembles written by Adrien Nicolas and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present an experimental study of two optical quantum memory systems based on electromagnetically induced transparency (EIT) in cold cesium atoms.We explain the relevance of quantum memories for the development of large-scale quantum networks, we give a comprehensive theory of the EIT phenomenon and underline the role of relevant parameters regarding the implementation of quantum memories.The first system under study is prepared in a free-space magneto-optical trap. The main result of this thesis is the demonstration of the spatial multimode capability of this system at the quantum level. For this, we used Laguerre-Gaussian (LG) light beams, i.e. beams possessing a non-zero value of orbital angular momentum (OAM). In a first step, we showed that the orbital angular momentum of stored light pulses is preserved by the memory, deep in the single photon regime. In a second step, we encoded information in the orbital angular momentum state of a weak light pulse and defined a qubit using two LG beams of opposite helicities. We developed an original setup for the measurement of this OAM qubit and used it to characterize the action of the memory during the storage of such a light pulse. Our results show that the memory performs the quantum storage of such a qubit.The second system under study, also a cloud of cold atoms, has the specificity that the atoms are trapped optically in the vicinity of a nano-waveguide. This innovative design ensures a higher light-matter interaction and facilitates the interfacing of photons into and out of the memory. We describe the building of this setup and the first steps towards quantum memory implementations.

Quantum Memory Protocols in Large Cold Atomic Ensembles

Author : Lucile Veissier
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (881 download)

DOWNLOAD NOW!

Book Synopsis Quantum Memory Protocols in Large Cold Atomic Ensembles by : Lucile Veissier

Download or read book Quantum Memory Protocols in Large Cold Atomic Ensembles written by Lucile Veissier and published by . This book was released on 2013 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum memories are an essential building block for quantum information science and in particular for the implementation of quantum communications across long distances. A quantum memory is defined as a system capable of storing and retrieving quantum states on-demand, such as quantum bits (qubits). Atomic ensembles are good candidates for this purpose because they enables strong light-matter coupling in case of a large number of atoms. Moreover, the collective effect, enhanced in the regime of large optical depth, can lead to storage efficiency close to unity. Thus, in this thesis, a large magneto-optical trap for cesium atoms is used as a atomic medium in order to implement a quantum memory protocol based on electromagnetically induced transparency (EIT). First, the EIT phenomenon is studied through a criterion for the discrimination between the EIT and the Autler-Townes splitting models. We then report on the implementation of an EIT-based memory for photonic qubits encoded in orbital angular momentum (OAM) of light. A reversible memory for Laguerre-Gaussian modes is implemented, and we demonstrate that the optical memory preserves the handedness of the helical structure at the single-photon level. Then, a full quantum state tomography of the retrieved OAM encoded qubits is performed, giving fidelities above the classical bound. This showed that our optical memory operates in the quantum regime. Finally, we present the implementation of the so-called DLCZ protocol in our ensemble of cold atoms, enabling the generation of heralded single photons. A homodyne detection setup allows us to realize the quantum tomography of the created photonic state.

Single Atoms Versus Atomic Ensembles as Quantum Memories for Quantum Repeaters

Author : Simon Mährlein
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (856 download)

DOWNLOAD NOW!

Book Synopsis Single Atoms Versus Atomic Ensembles as Quantum Memories for Quantum Repeaters by : Simon Mährlein

Download or read book Single Atoms Versus Atomic Ensembles as Quantum Memories for Quantum Repeaters written by Simon Mährlein and published by . This book was released on 2013 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Towards a Spin-Ensemble Quantum Memory for Superconducting Qubits

Author : Cécile Grèzes
Publisher : Springer
ISBN 13 : 3319215728
Total Pages : 240 pages
Book Rating : 4.3/5 (192 download)

DOWNLOAD NOW!

Book Synopsis Towards a Spin-Ensemble Quantum Memory for Superconducting Qubits by : Cécile Grèzes

Download or read book Towards a Spin-Ensemble Quantum Memory for Superconducting Qubits written by Cécile Grèzes and published by Springer. This book was released on 2015-08-19 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work describes theoretical and experimental advances towards the realization of a hybrid quantum processor in which the collective degrees of freedom of an ensemble of spins in a crystal are used as a multi-qubit register for superconducting qubits. A memory protocol made of write, read and reset operations is first presented, followed by the demonstration of building blocks of its implementation with NV center spins in diamond. Qubit states are written by resonant absorption of a microwave photon in the spin ensemble and read out of the memory on-demand by applying Hahn echo refocusing techniques to the spins. The reset step is implemented in between two successive write-read sequences using optical repumping of the spins.

Quantum Information with Continuous Variables of Atoms and Light

Author : N. J. Cerf
Publisher : World Scientific
ISBN 13 : 1860948162
Total Pages : 629 pages
Book Rating : 4.8/5 (69 download)

DOWNLOAD NOW!

Book Synopsis Quantum Information with Continuous Variables of Atoms and Light by : N. J. Cerf

Download or read book Quantum Information with Continuous Variables of Atoms and Light written by N. J. Cerf and published by World Scientific. This book was released on 2007 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum 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.

Long Distance Entanglement Between Quantum Memories

Author : Yong Yu
Publisher : Springer Nature
ISBN 13 : 9811979391
Total Pages : 147 pages
Book Rating : 4.8/5 (119 download)

DOWNLOAD NOW!

Book Synopsis Long Distance Entanglement Between Quantum Memories by : Yong Yu

Download or read book Long Distance Entanglement Between Quantum Memories written by Yong Yu and published by Springer Nature. This book was released on 2023-01-01 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights novel research work done on cold atom-based quantum networks. Given that one of the main challenges in building the quantum network is the limited entanglement distribution distance, this book presents some state-of-the-art experiments in tackling this challenge and, for the first time, establishes entanglement between quantum memories via metropolitan-scale fiber transmission. This achievement is accomplished by cooperating high-efficiency cold quantum memories, low-loss quantum frequency conversion modules, and long-fiber phase-locking techniques. In the book, the scheme design, experimental setup, data analyses, and numerous technical details are given. Therefore, it suits a broad readership that includes all students, researchers, and technicians who work in quantum information sciences.

Quantum Nonlinear Optics

Author : Eiichi Hanamura
Publisher : Springer Science & Business Media
ISBN 13 : 3540684840
Total Pages : 241 pages
Book Rating : 4.5/5 (46 download)

DOWNLOAD NOW!

Book Synopsis Quantum Nonlinear Optics by : Eiichi Hanamura

Download or read book Quantum Nonlinear Optics written by Eiichi Hanamura and published by Springer Science & Business Media. This book was released on 2007-07-04 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This graduate-level textbook gives an introductory overview of the fundamentals of quantum nonlinear optics. It deals with the organization of radiation field, interaction between electronic system and radiation field, statistics of light, and mutual manipulation of light and matter. It also covers laser oscillation, dynamics of light, nonlinear optical response, and nonlinear spectroscopy, as well as ultrashort and ultrastrong laser pulse. In addition, latest results of the frontier of this science are presented. Problems and solutions help the reader to master and review the material.

Photonic Quantum Technologies

Author : Mohamed Benyoucef
Publisher : John Wiley & Sons
ISBN 13 : 3527837434
Total Pages : 910 pages
Book Rating : 4.5/5 (278 download)

DOWNLOAD NOW!

Book Synopsis Photonic Quantum Technologies by : Mohamed Benyoucef

Download or read book Photonic Quantum Technologies written by Mohamed Benyoucef and published by John Wiley & Sons. This book was released on 2023-05-04 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photonic Quantum Technologies Brings together top-level research results to enable the development of practical quantum devices In Photonic Quantum Technologies: Science and Applications, the editor Mohamed Benyoucef and a team of distinguished scientists from different disciplines deliver an authoritative, one-stop overview of up-to-date research on various quantum systems. This unique book reviews the state-of-the-art research in photonic quantum technologies and bridges the fundamentals of the field with applications to provide readers from academia and industry, in one-location resource, with cutting-edge knowledge they need to have to understand and develop practical quantum systems for application in e.g., secure quantum communication, quantum metrology, and quantum computing. The book also addresses fundamental and engineering challenges en route to workable quantum devices and ways to circumvent or overcome them. Readers will also find: A thorough introduction to the fundamentals of quantum technologies, including discussions of the second quantum revolution (by Nobel Laureate Alain Aspect), solid-state quantum optics, and non-classical light and quantum entanglement Comprehensive explorations of emerging quantum technologies and their practical applications, including quantum repeaters, satellite-based quantum communication, quantum networks, silicon quantum photonics, integrated quantum systems, and future vision Practical discussions of quantum technologies with artificial atoms, color centers, 2D materials, molecules, atoms, ions, and optical clocks Perfect for molecular and solid-state physicists, Photonic Quantum Technologies: Science and Applications will also benefit industrial and academic researchers in photonics and quantum optics, graduate students in the field; engineers, chemists, and computer and material scientists.

Towards a Quantum Memory for Nonclassical Light with Cold Atomic Ensembles

Author : Sidney Burks
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (758 download)

DOWNLOAD NOW!

Book Synopsis Towards a Quantum Memory for Nonclassical Light with Cold Atomic Ensembles by : Sidney Burks

Download or read book Towards a Quantum Memory for Nonclassical Light with Cold Atomic Ensembles written by Sidney Burks and published by . This book was released on 2010 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Une mémoire quantique reversible permettant de stocker et relire de l'information quantique est une composante majeure dans la mise en oeuvre de nombreux protocoles d'information quantique. Comme la lumière est un porteur de l'information quantique fiable sur des longues distances, et comme les atomes offrent la possibilité d'obtenir de longues durées de stockage, le recherche actuelle sur la création d'une mémoire quantique se concentre sur la transfert des fluctuations quantiques de la lumière sur des cohérences atomiques. Le travail réalisé durant cette thèse porte sur le développement d'une mémoire quantique pour la lumière comprimée, utilisant un ensemble d'atomes froids de Cesium stockés dans un piège magnéto-optique. Nos deux principaux objectifs étaient le developpement d'une source de lumière non-classique, et le developpement d'un millieu atomique pour le stockage de celle-ci.Tout d'abord, nous commençons par présenter la construction d'un oscillateur paramétrique optique qui utilise un cristal nonlineaire de PPKTP. Cet OPO fonctionne comme source d'états de vide comprimé resonant avec la raie du Cesium. Nous caractérisons ces états grâce à une reconstruction par tomographie quantique, en utilisant une approche de vraisemblance maximale.Ensuite, nous examinons une nouvelle expérience qui nous permet d'utiliser comme millieu de stockage des atomes froids de Césium dans un piège magneto-optique récemment dévéloppé. Car cette expérience exige l'utilisation de nouveaux outils et techniques, nous discutons le developpement de ceux-ci, et comment ils ont contribué à notre progression vers le stockage des états quantiques dans nos atomes des Cesium, et finalement vers l'intrication de deux ensembles atomiques.

Advances in Atomic, Molecular, and Optical Physics

Author :
Publisher : Elsevier
ISBN 13 : 0323992536
Total Pages : 440 pages
Book Rating : 4.3/5 (239 download)

DOWNLOAD NOW!

Book Synopsis Advances in Atomic, Molecular, and Optical Physics by :

Download or read book Advances in Atomic, Molecular, and Optical Physics written by and published by Elsevier. This book was released on 2023-06-01 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Atomic, Molecular, and Optical Physics, Volume 72 highlights new advances in the field, with this new volume presenting interesting chapters written by an international board of authors. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in the Advances in Atomic, Molecular, and Optical Physics series - Includes the latest information in the field

Quantum Information Processing with Atomic Ensembles and Light

Author : Klemens Hammerer
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (162 download)

DOWNLOAD NOW!

Book Synopsis Quantum Information Processing with Atomic Ensembles and Light by : Klemens Hammerer

Download or read book Quantum Information Processing with Atomic Ensembles and Light written by Klemens Hammerer and published by . This book was released on 2006 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Quantum Information with Entangled Photon and Cold Atomic Ensembles

Author : Xiao-Hui Bao
Publisher :
ISBN 13 :
Total Pages : 127 pages
Book Rating : 4.:/5 (845 download)

DOWNLOAD NOW!

Book Synopsis Quantum Information with Entangled Photon and Cold Atomic Ensembles by : Xiao-Hui Bao

Download or read book Quantum Information with Entangled Photon and Cold Atomic Ensembles written by Xiao-Hui Bao and published by . This book was released on 2010 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Polarization Entanglement Storage in Ensemble-based Atomic Memories

Author : Bhaskar Mookerji
Publisher :
ISBN 13 :
Total Pages : 85 pages
Book Rating : 4.:/5 (755 download)

DOWNLOAD NOW!

Book Synopsis Polarization Entanglement Storage in Ensemble-based Atomic Memories by : Bhaskar Mookerji

Download or read book Polarization Entanglement Storage in Ensemble-based Atomic Memories written by Bhaskar Mookerji and published by . This book was released on 2011 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum 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.