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Смирнов, Андрей Владимирович |
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Исследование полосы преобразования терагерцовых смесителей на эффекте электронного разогрева в NbZr, NbN и в одиночном гетеропереходе AlGaAs/GaAs |
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2009 |
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Радиофизика |
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Радиофиз. |
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139 |
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no |
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RPLAB @ gujma @ |
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718 |
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Author |
Scheel, Stefan |
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Title |
Single-photon sources–an introduction |
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2009 |
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J. Modern Opt. |
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56 |
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2-3 |
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141-160 |
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LOQC; quantum cryptography; QKD |
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This review surveys the physical principles and recent developments in manufacturing single-photon sources. Special emphasis is placed on important potential applications such as linear optical quantum computing (LOQC), quantum key distribution (QKD) and quantum metrology that drive the development of these sources of single photons. We discuss the quantum-mechanical properties of light prepared in a quantum state of definite photon number and compare it with coherent light that shows a Poissonian distribution of photon numbers. We examine how the single-photon fidelity directly influences the ability to transmit secure quantum bits over a predefined distance. The theoretical description of modified spontaneous decay, the main principle behind single-photon generation, provides the background for many experimental implementations such as those using microresonators or pillar microcavities. The main alternative way to generate single photons using postselection of entangled photon pairs from parametric down-conversion, will be discussed. We concentrate on describing the underlying physical principles and we will point out limitations and open problems associated with single-photon production. |
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669 |
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Driessen, Eduard Frans Clemens |
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Coupling light to periodic nanostructures |
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2009 |
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Faculty of Science, Leiden University |
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Fac. Scien., Leiden Un. |
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144 |
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Issue Date: 2009-09-24 |
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RPLAB @ gujma @ |
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675 |
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Ryabchun, S. A.; Tretyakov, I. V.; Finkel, M. I.; Maslennikov, S. N.; Kaurova, N. S.; Seleznev, V. A.; Voronov, B. M.; Gol'tsman, G. N. |
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NbN phonon-cooled hot-electron bolometer mixer with additional diffusion cooling |
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2009 |
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Proc. 20th Int. Symp. Space Terahertz Technol. |
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Proc. 20th ISSTT |
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151-154 |
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HEB, mixer, bandwidth, noise temperatue, in-situ contacts, in situ contacts |
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Charlottesville, USA |
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590 |
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Zurek, Wojciech Hubert |
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Quantum Darwinism |
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2009 |
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Nature Physics |
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Nat. Phys. |
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5 |
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3 |
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181-188 |
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fromIPMRAS |
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Quantum Darwinism describes the proliferation, in the environment, of multiple records of selected states of a quantum system. It explains how the quantum fragility of a state of a single quantum system can lead to the classical robustness of states in their correlated multitude; shows how effective `wave-packet collapse' arises as a result of the proliferation throughout the environment of imprints of the state of the system; and provides a framework for the derivation of Born's rule, which relates the probabilities of detecting states to their amplitudes. Taken together, these three advances mark considerable progress towards settling the quantum measurement problem. |
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RPLAB @ gujma @ |
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799 |
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