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Esteban, Eduin; Serna, Hernandez |
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Title |
Quantum key distribution protocol with private-public key |
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2009 |
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arXiv |
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arXiv |
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3 |
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quantum cryptography; QKD; protocol |
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A quantum cryptographic protocol based in public key cryptography combinations and private key cryptography is presented. Unlike the BB84 protocol 1 and its many variants 2,3 two quantum channels are used. The present research does not make reconciliation mechanisms of information to derive the key. A three related system of key distribution are described. |
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arXiv: 0908.2146 |
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RPLAB @ gujma @ |
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756 |
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Fiore, A.; Marsili, F.; Bitauld, D.; Gaggero, A.; Leoni, R.; Mattioli, F.; Divochiy, A.; Korneev, A.; Seleznev, V.; Kaurova, N.; Minaeva, O.; Gol’tsman, G. |
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Title |
Counting photons using a nanonetwork of superconducting wires |
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Conference Article |
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2009 |
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Nano-Net |
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120-122 |
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SSPD, SNSPD |
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We show how the parallel connection of photo-sensitive superconducting nanowires can be used to count the number of photons in an optical pulse, down to the single-photon level. Using this principle we demonstrate photon-number resolving detectors with unprecedented sensitivity and speed at telecommunication wavelengths. |
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Springer Berlin Heidelberg |
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Berlin, Heidelberg |
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Cheng, M. |
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978-3-642-02427-6 |
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10.1007/978-3-642-02427-6_20 |
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1242 |
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Gol'tsman, B. M.; Kutasov, V. A.; Luk'yanova, L. N. |
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Mechanism of formation of texture and its influence on the strength of thermoelectric p-Bi0.5Sb1.5Te3 |
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Journal Article |
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2009 |
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Physics of the Solid State |
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Phys. Sol. St. |
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51 |
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4 |
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747-749 |
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It is established that, in preparing p-Bi0.5Sb1.5Te3 by vertical zone melting, in addition to the directional texture (characteristic of materials exhibiting a highly anisotropic growth rate) in which the cleavage planes of crystal grains are parallel to the direction of propagation of the crystallization front, other texture types can arise, in which the orientation of grain cleavage planes is ordered in a cross-sectional plane of the ingot. Two types of such textures, “radial†and “circular,†were observed. In a radial texture, the lines of intersection of grain cleavage planes with a cross-sectional plane of the ingot are oriented along radii of this cross section and, in a circular texture, these lines of intersection are oriented approximately perpendicular to a radius crossing the grain. The formation of a radial texture is associated with rotation of the ampoule with the crystallizing substance about its vertical axis causing centrifugal flows of the melt. The formation of a circular texture is associated with the orientation effect of the ampoule walls and with circular motion of the melt during torsional oscillations of the ampoule about the vertical axis. Ingots with a radial texture exhibit much lower resistance to splitting along their axis than ingots with a circular texture do. An explanation is provided for this fact. |
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RPLAB @ gujma @ |
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726 |
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Author |
Goltsman, G. |
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Superconducting NbN hot-electron bolometer mixer, direct detector and single-photon counter: from devices to systems |
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Report |
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2009 |
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2-nd Int. Conf. EUROFLUX |
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2-nd Int. Conf. EUROFLUX |
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HEB, SSPD, SNSPD |
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Avignon, France |
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Provided by the SAO/NASA Astrophysics Data System |
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1398 |
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Author |
Goltsman, G. N. |
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Ultrafast nanowire superconducting single-photon detector with photon number resolving capability |
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Conference Article |
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2009 |
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Proc. SPIE |
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Proc. SPIE |
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7236 |
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72360D (1 to 11) |
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PNR NbN SSPD, SNSPD, superconducting single-photon detectors, photon number resolving detectors, ultrathin NbN films |
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In this paper we present a review of the state-of-the-art superconducting single-photon detector (SSPD), its characterization and applications. We also present here the next step in the development of SSPD, i.e. photon-number resolving SSPD which simultaneously features GHz counting rate. We have demonstrated resolution up to 4 photons with quantum efficiency of 2.5% and 300 ps response pulse duration providing very short dead time. |
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SPIE |
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Arakawa, Y.; Sasaki, M.; Sotobayashi, H. |
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1403 |
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