2,584 research outputs found
Sichuan (China), lakes on the saddle below mountains
No full textLakes on the Hai-Tze-Shan saddle below Djara Peak.Image is part of research condcuted by J. Hanson-Lowe for the article: Notes on the Pleistocene Glaciation of the South Chinese-Tibetan Borderland
Author(s): J. Hanson-Lowe
Source: Geographical Review, Vol. 37, No. 1 (Jan., 1947), pp. 70-87
Published by: American Geographical Society
Stable URL: http://www.jstor.org/stable/211362http://www.jstor.org/stable/211362Grayscal
Sichuan (China), hanging valleys formed by glaciers
No full textHanging valley on left-hand wall of valley below, and to east of the Sara La.Image is part of research condcuted by J. Hanson-Lowe for the article: Notes on the Pleistocene Glaciation of the South Chinese-Tibetan Borderland
Author(s): J. Hanson-Lowe
Source: Geographical Review, Vol. 37, No. 1 (Jan., 1947), pp. 70-87
Published by: American Geographical Society
Stable URL: http://www.jstor.org/stable/211362http://www.jstor.org/stable/211362Grayscal
Sichuan (China), view of mountains across from Litang plain
No full textLooking across the Litang plain from somewhat east of that town. The "Lama's Hat" peak lies in the center of the picture and is flanked by corries.Image is part of research conducted by J. Hanson-Lowe for the article: Notes on the Pleistocene Glaciation of the South Chinese-Tibetan Borderland
Author(s): J. Hanson-Lowe
Source: Geographical Review, Vol. 37, No. 1 (Jan., 1947), pp. 70-87
Published by: American Geographical Society
Stable URL: http://www.jstor.org/stable/211362http://www.jstor.org/stable/211362Grayscal
Maeser, Karl G.-Statue P.11
No full textUnveiling Ceremonies of Dr. Karl B. Maeser Statue. Brigham Young University. November 7. 1958. 1. Alma P. Burton-Offering Benediction. 2. Nicholas G. Morgan, Sr. 3. President Ernest L. Wilkinson. 4. Mrs. Nicholas G. Morgan, Sr. 5. Mrs. Karen G. Longden. 6. Mrs. Joyce H. Hanson. Mrs. Longden and Mrs. Hanson unveiled the statue.Sculptor: Ortho R. Fairbank
Distributed entanglement and teleportation on a quantum network
No full textWe report on the realization of a multi-node quantum network. Using the network, we have demonstrated three protocols; generation of a entangled state shared by all nodes, entanglement swapping and quantum teleportation between non-neighboring nodes.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.QID/Hanson LabQCD/Vandersypen LabALG/GeneralBUS/Quantum DelftQID/Wehner GroupQN/Borregaard groepQuantum Computer ScienceQN/Hanson La
Entanglement distillation between solid-state quantum network nodes
No full textThe impact of future quantum networks hinges on high-quality quantum entanglement shared between network nodes. Unavoidable imperfections necessitate a means to improve remote entanglement by local quantum operations. We realize entanglement distillation on a quantum network primitive of distant electron-nuclear two-qubit nodes. The heralded generation of two copies of a remote entangled state is demonstrated through single-photon-mediated entangling of the electrons and robust storage in the nuclear spins. After applying local two-qubit gates, single-shot measurements herald the distillation of an entangled state with increased fidelity that is available for further use. The key combination of generating, storing, and processing entangled states should enable the exploration of multiparticle entanglement on an extended quantum network.Accepted Author ManuscriptQID/Hanson La
Dephasing mechanisms of diamond-based nuclear-spin memories for quantum networks
No full textWe probe dephasing mechanisms within a quantum network node consisting of a single nitrogen-vacancy center electron spin that is hyperfine coupled to surrounding C13 nuclear-spin quantum memories. Previous studies have analyzed memory dephasing caused by the stochastic electron-spin reset process, which is a component of optical internode entangling protocols. Here, we find, by using dynamical decoupling techniques and exploiting phase matching conditions in the electron-nuclear dynamics, that control infidelities and quasistatic noise are the major contributors to memory dephasing induced by the entangling sequence. These insights enable us to demonstrate a 19-fold improved memory performance which is still not limited by the electron reinitialization process. We further perform pump-probe studies to investigate the spin-flip channels during the optical electron spin reset. We find that spin flips occur via decay from the metastable singlet states with a branching ratio of 8(1):1:1, in contrast with previous work. These results allow us to formulate straightforward improvements to diamond-based quantum networks and similar architectures.QID/Hanson LabQN/Hanson La
Deterministic delivery of remote entanglement on a quantum network
No full textLarge-scale quantum networks promise to enable secure communication, distributed quantum computing, enhanced sensing and fundamental tests of quantum mechanics through the distribution of entanglement across nodes 1-7. Moving beyond current two-node networks 8-13 requires the rate of entanglement generation between nodes to exceed the decoherence (loss) rate of the entanglement. If this criterion is met, intrinsically probabilistic entangling protocols can be used to provide deterministic remote entanglement at pre-specified times. Here we demonstrate this using diamond spin qubit nodes separated by two metres. We realize a fully heralded single-photon entanglement protocol that achieves entangling rates of up to 39 hertz, three orders of magnitude higher than previously demonstrated two-photon protocols on this platform 14. At the same time, we suppress the decoherence rate of remote-entangled states to five hertz through dynamical decoupling. By combining these results with efficient charge-state control and mitigation of spectral diffusion, we deterministically deliver a fresh remote state with an average entanglement fidelity of more than 0.5 at every clock cycle of about 100 milliseconds without any pre-or post-selection. These results demonstrate a key building block for extended quantum networks and open the door to entanglement distribution across multiple remote nodes.Accepted Author Manuscript Change history: In this Letter, the received date should be 20 December 2017, instead of 27 April 2018. This has been corrected online. De daarbij behorende doi 10.1038/s41586-018-0314-9QID/Hanson LabALG/GeneralQN/Hanson La
An answer to a paper, [electronic resource] : Called A Memorial Of the Poor Inhabitants, Tradesmen and Labourers of the Kingdom of Ireland. By the Author of the Short View of the State of Ireland.
No full textThe author of The short view = Jonathan Swift.An answer to 'To the R-d Dr. J-n S-t, the memorial .. ', by Sir John Browne.Teerink-Scouten,Hanson,Goldsmiths',Electronic reproduction.English Short Title Catalog,Reproduction of original from University of London's Goldsmiths' Library
Romania's evolving legal framework for private sector development
No full textAs the economies of Central and Eastern Europe move from central planning and state ownership to market-driven development of private sector activity, they are undertaking comprehensive change in the"rules of the game", the legal framework for economic activity. The authors analyze the evolving legal framework for private sector development in Romania. The government has worked intensively in the last two years to create a legal framework for a market economy. It has adopted not only a new constitution but also extensive new legislation covering real and intellectual property, companies, and foreign investment. It has revived the pre-war civil code as a basis for contract law, and is moving to modernize its bankruptcy code. The only area surveyed in which little legal reform has occurred is antimonopoly law. Challenges remain in both law and practice. The broad principles of private ownership, free market exchange, and equal treatment of public and private firms are well recognized and have been largely achieved. But a tendency towards centralized, bureaucratic control remains in excessive requirements for approval and uneconomic limits on certain activities. Moreover, implementation will take a long time because there is little or no institutional framework for enforcement and dispute resolution. Developing a body of regulation and case practice will take time.Environmental Economics&Policies,National Governance,Legal Products,Banks&Banking Reform,Real&Intellectual Property Law
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