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Lee, Ju-Hyun; Kim, Dong-Woo; Wu, Yung-Hsun; Yu, Chang-Jae; Lee, Sin-Doo; Wu, Shin-Tson |
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Title |
High-speed infrared phase modulators using short helical pitch ferroelectric liquid crystals |
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Journal Article |
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2005 |
Publication |
Optics Express |
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Opt. Express |
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13 |
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20 |
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7732 |
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IR modulator |
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1094-4087 |
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541 |
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Miller, Aaron J.; Lita, Adriana E.; Calkins, Brice; Vayshenker, Igor; Gruber, Steven M.; Nam, Sae Woo |
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Title |
Compact cryogenic self-aligning fiber-to-detector coupling with losses below one percent |
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Journal Article |
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Year |
2011 |
Publication |
Optics Express |
Abbreviated Journal |
Opt. Express |
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Volume |
19 |
Issue |
10 |
Pages |
9102-9110 |
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Keywords |
TES |
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Abstract |
We present a compact packaging technique for coupling light from a single-mode telecommunication fiber to cryogenic single-photon sensitive devices. Our single-photon detectors are superconducting transition-edge sensors (TESs) with a collection area only a factor of a few larger than the area of the fiber core which presents significant challenges to low-loss fiber-to-detector coupling. The coupling method presented here has low loss, cryogenic compatibility, easy and reproducible assembly and low component cost. The system efficiency of the packaged single-photon counting detectors is verified by the “triplet method†of power-source calibration along with the “multiple attenuator†method that produces a calibrated single-photon flux. These calibration techniques, when used in combination with through-wafer imaging and fiber back-reflection measurements, give us confidence that we have achieved coupling losses below 1 % for all devices packaged according to the self-alignment method presented in this paper. |
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RPLAB @ gujma @ |
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666 |
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Anant, Vikas; Kerman, Andrew J.; Dauler, Eric A.; Yang, Joel K. W.; Rosfjord, Krist.ine M.; Berggren, Karl K. |
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Title |
Optical properties of superconducting nanowire single-photon detectors |
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Journal Article |
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2008 |
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Optics Express |
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Opt. Express |
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16 |
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14 |
Pages |
10750 |
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1094-4087 |
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RPLAB @ s @ |
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413 |
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Stucki, Damien; Barreiro, Claudio; Fasel, Sylvain; Gautier, Jean-Daniel; Gay, Olivier; Gisin, Nicolas; Thew, Rob; Thoma, Yann; Trinkler, Patrick; Vannel, Fabien; Zbinden, Hugo |
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Title |
Continuous high speed coherent one-way quantum key distribution |
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Journal Article |
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2009 |
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Optics Express |
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Opt. Express |
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17 |
Issue |
16 |
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13326-13334 |
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Keywords |
quantum cryptography, QKD, PNS, SSPD, coherent one way, COW |
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Abstract |
Quantum key distribution (QKD) is the first commercial quantum technology operating at the level of single quanta and is a leading light for quantum-enabled photonic technologies. However, controlling these quantum optical systems in real world environments presents significant challenges. For the first time, we have brought together three key concepts for future QKD systems: a simple high-speed protocol; high performance detection; and integration both, at the component level and for standard fibre network connectivity. The QKD system is capable of continuous and autonomous operation, generating secret keys in real time. Laboratory and field tests were performed and comparisons made with robust InGaAs avalanche photodiodes and superconducting detectors. We report the first real world implementation of a fully functional QKD system over a 43dB-loss (150km) transmission line in the Swisscom fibre optic network where we obtained average real-time distribution rates over 3 hours of 2.5bps. |
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RPLAB @ akorneev @ |
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602 |
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Huang, Kevin C. Y.; Jun, Young Chul; Seo, Min-Kyo; Brongersma, Mark L. |
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Title |
Power flow from a dipole emitter near an optical antenna |
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Journal Article |
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Year |
2011 |
Publication |
Optics Express |
Abbreviated Journal |
Opt. Express |
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19 |
Issue |
20 |
Pages |
19084-19092 |
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Keywords |
optical antennas |
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Current methods to calculate the emission enhancement of a quantum emitter coupled to an optical antenna of arbitrary geometry rely on analyzing the total Poynting vector power flow out of the emitter or the dyadic Green functions from full-field numerical simulations. Unfortunately, these methods do not provide information regarding the nature of the dominant energy decay pathways. We present a new approach that allows for a rigorous separation, quantification, and visualization of the emitter output power flow captured by an antenna and the subsequent reradiation power flow to the far field. Such analysis reveals unprecedented details of the emitter/antenna coupling mechanisms and thus opens up new design strategies for strongly interacting emitter/antenna systems used in sensing, active plasmonics and metamaterials, and quantum optics. |
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RPLAB @ gujma @ |
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743 |
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