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Rosfjord, K. M.; Yang, J. K. W.; Dauler, E. A.; Anant, V.; Berggren, K. K.; Kerman, A. J.; Voronov, B. M.; Gol’tsman, G. N. |
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Title |
Increased detection efficiencies of nanowire single-photon detectors by integration of an optical cavity and anti-reflection coating |
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2006 |
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CLEO/QELS |
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CLEO/QELS |
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JTuF2 (1 to 2) |
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SSPD, SNSPD |
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We fabricate and test superconducting NbN-nanowire single-photon detectors with an integrated optical cavity and anti-reflection coating. We design the cavity and coating such as to maximize absorption in the NbN film of the detector. |
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2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference |
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1452 |
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HgCdTe detectors technical data sheet |
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Miscellaneous |
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2006 |
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HgCdTe |
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RPLAB @ s @ |
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464 |
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Gordon, N. T.; Lees, D. J.; Bowen, G.; Phillips, T. S.; Haigh, M.; Jones, C. L.; Maxey, C. D.; Hipwood, L.; Catchpole, R. A. |
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HgCdTe detectors operating above 200 K |
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2006 |
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J. Electron. Mater. |
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35 |
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6 |
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1140-1144 |
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HgCdTe detector |
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0361-5235 |
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Heterodyne detection: II. Astronomy 525. Lecture 30 |
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2006 |
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detector, mixer, heterodyne detection, mixing |
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542 |
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Pilbratt, Goran L. |
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Title |
Herschel mission: status and observing opportunities |
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2006 |
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RPLAB @ s @ HERSCHEL_proj |
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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 |
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J. Appl. Phys. |
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100 |
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7 |
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074507 |
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HEB |
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0021-8979 |
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RPLAB @ s @ |
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385 |
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Słysz, W.; Węgrzecki, M.; Bar, J.; Grabiec, P.; Górska, M.; Zwiller, V.; Latta, C.; Bohi, P.; Milostnaya, I.; Minaeva, O.; Antipov, A.; Okunev, O.; Korneev, A.; Smirnov, K.; Voronov, B.; Kaurova, N.; Gol’tsman, G.; Pearlman, A.; Cross, A.; Komissarov, I.; Verevkin, A.; Sobolewski, R. |
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Fiber-coupled single-photon detectors based on NbN superconducting nanostructures for practical quantum cryptography and photon-correlation studies |
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Journal Article |
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2006 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
88 |
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26 |
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261113 (1 to 3) |
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SSPD, SNSPD |
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Abstract |
We have fabricated and tested a two-channel single-photon detector system based on two fiber-coupled superconducting single-photon detectors (SSPDs). Our best device reached the system quantum efficiency of 0.3% in the 1540-nm telecommunication wavelength with a fiber-to-detector coupling factor of about 30%. The photoresponse consisted of 2.5-ns-wide voltage pulses with a rise time of 250ps and timing jitter below 40ps. The overall system response time, measured as a second-order, photon cross-correlation function, was below 400ps. Our SSPDs operate at 4.2K inside a liquid-helium Dewar, but their optical fiber inputs and electrical outputs are at room temperature. Our two-channel detector system should find applications in practical quantum cryptography and in antibunching-type quantum correlation measurements.
The authors would like to thank Dr. Marc Currie for his assistance in early time-resolved photoresponse measurements and Professor Atac Imamoglu for his support. This work was supported by the Polish Ministry of Science under Project No. 3 T11B 052 26 (Warsaw), RFBR 03-02-17697 and INTAS 03-51-4145 grants (Moscow), CRDF Grant No. RE2-2531-MO-03 (Moscow), RE2-2529-MO-03 (Moscow and Rochester), and US AFOSR FA9550-04-1-0123 (Rochester). Additional funding was provided by the grants from the MIT Lincoln Laboratory and BBN Technologies Corp. |
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0003-6951 |
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Stevens, M.; Hadfield, R.; Schwall, R.; Nam, S.W.; Mirin, R.; Gupta, J. |
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Fast lifetime measurements of infrared emitters using a low-jitter superconduct- ing single-photon detector |
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Journal Article |
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2006 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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89 |
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031109 |
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SSPD, jitter, QD, QW |
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RPLAB @ akorneev @ |
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611 |
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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 |
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Nature Physics |
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Nat. Phys. |
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2 |
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10 |
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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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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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2006 |
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Superconductor Science and Technology |
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Supercond. Sci. Technol. |
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19 |
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10 |
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1051-1056 |
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HEB |
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0953-2048 |
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