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Brown, E. R.; Lee, A. W. M.; Navi, B. S.; Bjarnason, J. E. |
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Title |
Characterization of a planar self-complementary square-spiral antenna in the THz region |
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Journal Article |
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2006 |
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Microwave and Optical Technology Letters |
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Microwave Opt Technol Lett |
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48 |
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3 |
Pages |
524-529 |
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optical antennas; square spiral antenna; self complementary THz; photomixing; lens; method of moments; geometric optics; physical optics |
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This paper describes a compact, self-complementary square-spiral antenna on a GaAs substrate with a broadside high-directivity (~9 dB) frequency-independent pattern when coupled through a silicon hyperhemisphere. The driving-point resistance undulates between ~00 and 300Ω from 200 GHz to 1 THz—much higher than the 72Ω value from Booker's modified formula, but quite beneficial for coupling to high-impedance broadband devices |
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RPLAB @ gujma @ |
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736 |
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Zhang, Qiang; Goebel, Alexander; Wagenknecht, Claudia; Chen, Yu-Ao; Zhao, Bo; Yang, Tao; Mair, Alois; Schmiedmayer, Jörg; Pan, Jian-Wei |
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Title |
Experimental quantum teleportation of a two-qubit composite system |
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Journal Article |
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2006 |
Publication |
Nature Physics |
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Nat. Phys. |
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2 |
Issue |
10 |
Pages |
678-682 |
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fromIPMRAS; quantum teleportation |
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Quantum teleportation, a way to transfer the state of a quantum system from one location to another, is central to quantum communication and plays an important role in a number of quantum computation protocols. Previous experimental demonstrations have been implemented with single photonic or ionic qubits. However, teleportation of single qubits is insufficient for a large-scale realization of quantum communication and computation. Here, we present the experimental realization of quantum teleportation of a two-qubit composite system. In the experiment, we develop and exploit a six-photon interferometer to teleport an arbitrary polarization state of two photons. The observed teleportation fidelities for different initial states are all well beyond the state estimation limit of 0.40 for a two-qubit system. Not only does our six-photon interferometer provide an important step towards teleportation of a complex system, it will also enable future experimental investigations on a number of fundamental quantum communication and computation protocols |
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RPLAB @ gujma @ |
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795 |
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ГОСТ 2.120-73. ЕСКД. Технический проект |
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860 |
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ГОСТ 2.501-88. ЕСКД. Правила учета и хранения |
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862 |
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ГОСТ 3.1102-81. ЕСТД. Стадии разработки и виды документов |
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2006 |
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gost, detproj |
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868 |
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