| Records |
| Author |
Hovenier J.N.; Adam A.J.L.; Kašalynas I.; Gao J.R.; Klaassen T.O.; Baryshev A.; Williams B.S.; Kumar S.; Hu Q.; Reno J.L. |
| Title |
Phase-locking on the beat signal of a two-mode 2.7 terahertz metal-metal quantum cascade laser |
Type |
Conference Article |
| Year |
2006 |
Publication |
Proc. Symp. IEEE/LEOS Benelux Chapter |
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| Volume |
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Issue |
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Pages |
125-128 |
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| Abstract |
We have studied the linewidth and phase-locking of a 2.7 THz quantum cascade laser by using a superconducting bolometer mixer. The 8 GHz beat signal is compared with a microwave reference with a feedback to the laser bias current. Phase locking has been demonstrated, resulting in an extremely narrow beat linewidth of less than 10 Hz. Under frequency-stabilization conditions we find that the line profile is virtually Lorentzian with a long-term minimum linewidth of the THz modes of about 6.3 kHz. Temperature dependent measurements suggestthat this linewidthdoes not approach the Schawlow-Townes limit. |
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no |
| Call Number |
RPLAB @ atomics90 @ |
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968 |
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| Author |
Goltsman, G. N. |
| Title |
Submillimeter superconducting receivers for astronomy, atmospheric studies and other applications |
Type |
Abstract |
| Year |
2006 |
Publication |
31nd IRMW / 14th ICTE |
Abbreviated Journal |
31nd IRMW / 14th ICTE |
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Pages |
177 |
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Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics |
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no |
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1443 |
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| Author |
Irwin, K.D. |
| Title |
Thermodynamics of nonlinear bolometers near equilibrium |
Type |
Conference Article |
| Year |
2006 |
Publication |
Proc. 11th International Workshop on Low Temp. Detectors |
Abbreviated Journal |
Proc. 11th International Workshop on Low Temp. Detectors |
| Volume |
559 |
Issue |
2 |
Pages |
718-720 |
| Keywords |
bolometers, microcalorimeters, nonlinear thermodynamics, nonequilibrium |
| Abstract |
We present the first thermodynamically correct calculation of the noise in a simple nonlinear resistive bolometer or calorimeter operated out of equilibrium. The solution is rigorous only for first- and second-order deviations from equilibrium, and for the linear and quadratic terms of dissipative elements. In contrast, existing models of noise in resistive bolometers are based on the application of equilibrium theories to a system that is often nonlinear and out of equilibrium. We derive solutions applicable both in and out of steady state. The noise has power spectral density different from the equilibrium theory, and it has higher-order correlations and non-Gaussian characteristics. The results do not apply to non-Markovian hidden variables in the bolometer. |
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Recommended by Klapwijk |
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no |
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915 |
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Rodriguez-Morales, F.; Zannoni, R.; Nicholson, J.; Fischetti, M.; Yngvesson, K. S.; Appenzeller, J. |
| Title |
Direct and heterodyne detection of microwaves in a metallic single wall carbon nanotube |
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Journal Article |
| Year |
2006 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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89 |
Issue |
8 |
Pages |
083502 |
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carbon nanotube, GHz heterodyne detector, direct detector |
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0003-6951 |
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no |
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565 |
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| Title |
Heterodyne detection: II. Astronomy 525. Lecture 30 |
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Miscellaneous |
| Year |
2006 |
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detector, mixer, heterodyne detection, mixing |
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no |
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542 |
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Maslennikov, S. N.; Finkel, M. I.; Antipov, S. V.; Polyakov, S. L.; Zhang, W.; Ozhegov, R.; Vachtomin, Yu. B.; Svechnikov, S. I.; Smirnov, K. V.; Korotetskaya, Yu. P.; Kaurova, N. S.; Gol'tsman, G. N.; Voronov, B. M. |
| Title |
Spiral antenna coupled and directly coupled NbN HEB mixers in the frequency range from 1 to 70 THz |
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Conference Article |
| Year |
2006 |
Publication |
Proc. 17th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 17th Int. Symp. Space Terahertz Technol. |
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Pages |
177-179 |
| Keywords |
directly coupled NbN HEB mixers |
| Abstract |
We investigate both antenna coupled and directly coupled HEB mixers at several LO frequencies within the range of 2.5 THz to 70 THz. H20 (2.5+10.7 THz), and CO2 (30 THz) gas discharge lasers are used as the local oscillators. The noise temperature of antenna coupled mixers is measured at LO frequencies of 2.5 THz, 3.8 THz, and 30 THz. The results for both antenna coupled and directly coupled mixer types are compared. The devices with in—plane dimensions of 5x5 ,um 2 are pumped by LO radiation at 10.7 THz. The directly coupled HEB demonstrates nearly flat dependence of responsivity on frequency in the range of 25+64 THz. |
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Paris, France |
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no |
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386 |
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| Author |
Zhang, Qiang; Goebel, Alexander; Wagenknecht, Claudia; Chen, Yu-Ao; Zhao, Bo; Yang, Tao; Mair, Alois; Schmiedmayer, Jörg; Pan, Jian-Wei |
| Title |
Experimental quantum teleportation of a two-qubit composite system |
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Journal Article |
| Year |
2006 |
Publication |
Nature Physics |
Abbreviated Journal |
Nat. Phys. |
| Volume |
2 |
Issue |
10 |
Pages |
678-682 |
| Keywords |
fromIPMRAS; quantum teleportation |
| Abstract |
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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no |
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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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2006 |
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gost, detproj |
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no |
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860 |
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ГОСТ 2.501-88. ЕСКД. Правила учета и хранения |
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2006 |
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gost, detproj |
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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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no |
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868 |
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ГОСТ 3.1121-84. ЕСТД. Общие требования к комплектности и оформлению документов на типовые и групповые технологические процессы (операции) |
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2006 |
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gost, detproj |
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870 |
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Hajenius, M.; Baselmans, J. J. A.; Baryshev, A.; Gao, J. R.; Klapwijk, T. M.; Kooi, J. W.; Jellema, W.; Yang, Z. Q. |
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Full characterization and analysis of a terahertz heterodyne receiver based on a NbN hot electron bolometer |
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Journal Article |
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2006 |
Publication |
J. Appl. Phys. |
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100 |
Issue |
7 |
Pages |
074507 |
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HEB |
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0021-8979 |
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no |
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RPLAB @ s @ |
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385 |
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Semenov, A. D.; Il'in, K.; Siegel, M.; Smirnov, A.; Pavlov, S.; Richter, H.; Hübers, H.-W. |
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Evidence of non-bolometric mixing in the bandwidth of a hot-electron bolometer |
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Journal Article |
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2006 |
Publication |
Superconductor Science and Technology |
Abbreviated Journal |
Supercond. Sci. Technol. |
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19 |
Issue |
10 |
Pages |
1051-1056 |
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HEB |
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0953-2048 |
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no |
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536 |
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Semenov, Alexei; Il'yin, Konstantin; Siegel, Michael; Smirnov, Andrey; Pavlov, Sergey; Richter, Heiko; Hübers, Heinz-Wilhelm |
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Intermediate frequency bandwidth of a hot-electron mixer: Comparision with bolometric models |
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Conference Article |
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2006 |
Publication |
Proc. 17th Int. Symp. Space Terahertz Technol. |
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73-76 |
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HEB |
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Paris, France |
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537 |
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Финкель, М. И. |
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Терагерцовые смесители на эффекте электронного разогрева в ультратонких плёнках NbN и NbTiN |
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Manuscript |
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2006 |
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М. МПГУ |
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HEB, detector, mixer, terahertz, THz, infrared, IR, direct detection effect, conversion bandwidth, conversion loss |
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Ph.D. thesis |
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no |
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597 |
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