Improving The Spectral Bandwidth Of Superconducting Nanowire Single Photon Detectors Snspds

Author : Charaev, Ilya
Publisher : KIT Scientific Publishing
ISBN 13 : 3731507455
Total Pages : 178 pages
Book Rating : 4.51/5 ( download)

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Download or read book Improving the Spectral Bandwidth of Superconducting Nanowire Single-Photon Detectors (SNSPDs) written by Charaev, Ilya and published by KIT Scientific Publishing. This book was released on 2018-07-31 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Ilya Charaev
Publisher :
ISBN 13 : 9781013279409
Total Pages : 168 pages
Book Rating : 4.09/5 ( download)

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Download or read book Improving the Spectral Bandwidth of Superconducting Nanowire Single-Photon Detectors (SNSPDs) written by Ilya Charaev and published by . This book was released on 2020-10-09 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a comprehensive investigation of the influence of geometry-dependent factors on performance metrics of superconducting single-photon detectors. With fundamental knowledge, main investigations are focused to extend the spectral bandwidth and to enhance the detection efficiency, especially in infrared range. The developed technology of single-spiral detectors and unconventional electron-beam lithography allows to improve the performance of superconducting detectors. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Author : Hofherr, Matthias
Publisher : KIT Scientific Publishing
ISBN 13 : 3731502291
Total Pages : 216 pages
Book Rating : 4.96/5 ( download)

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Download or read book Real-time imaging systems for superconducting nanowire single-photon detector arrays written by Hofherr, Matthias and published by KIT Scientific Publishing. This book was released on 2014-09-26 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconducting nanowire singe-photon detectors (SNSPD) are promising detectors in the field of applications, where single-photon resolution is required like in quantum optics, spectroscopy or astronomy. These cryogenic detectors gain from a broad spectrum in the optical and infrared range and deliver low dark count rates and low jitter times. This thesis improves the understanding of the detection mechanism of SNSPDs and intodruces new and promising multi-pixel readout concepts.

Author : Schmidt, Wolfgang-Gustav Ekkehart
Publisher : KIT Scientific Publishing
ISBN 13 : 3731509806
Total Pages : 240 pages
Book Rating : 4.06/5 ( download)

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Download or read book Superconducting Nanowire Single-Photon Detectors for Quantum Photonic Integrated Circuits on GaAs written by Schmidt, Wolfgang-Gustav Ekkehart and published by KIT Scientific Publishing. This book was released on 2020-07-09 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Knehr, Emanuel Marius
Publisher : KIT Scientific Publishing
ISBN 13 : 3731512564
Total Pages : 200 pages
Book Rating : 4.61/5 ( download)

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Download or read book Technology and readout for scaling up superconducting nanowire single-photon detectors written by Knehr, Emanuel Marius and published by KIT Scientific Publishing. This book was released on 2023-03-02 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents three advances to scale SNSPDs from few-pixel devices to large detector arrays: atomic layer deposition for the fabrication of uniform superconducting niobium nitride films of few-nanometer thickness, a frequency-multiplexing scheme to operate multiple detectors with a reduced number of lines, and the integration of SNSPDs with free-form polymer structures to achieve efficient optical coupling onto the active area of the detectors.

Author : Matthias Hofherr
Publisher :
ISBN 13 : 9781013279614
Total Pages : 208 pages
Book Rating : 4.11/5 ( download)

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Download or read book Real-time Imaging Systems for Superconducting Nanowire Single-photon Detector Arrays written by Matthias Hofherr and published by . This book was released on 2020-10-09 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconducting nanowire singe-photon detectors (SNSPD) are promising detectors in the field of applications, where single-photon resolution is required like in quantum optics, spectroscopy or astronomy. These cryogenic detectors gain from a broad spectrum in the optical and infrared range and deliver low dark count rates and low jitter times. This thesis improves the understanding of the detection mechanism of SNSPDs and intodruces new and promising multi-pixel readout concepts. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Author : Xiaolong Hu (Ph. D.)
Publisher :
ISBN 13 :
Total Pages : 131 pages
Book Rating : 4.19/5 ( download)

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Download or read book Efficient Superconducting-nanowire Single-photon Detectors and Their Applications in Quantum Optics written by Xiaolong Hu (Ph. D.) and published by . This book was released on 2011 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconducting-nanowire single-photon detectors (SNSPDs) are an emerging technology for infrared photon counting and detection. Their advantages include good device efficiency, fast operating speed, low dark-count rate, low timing jitter, free running mode, and no afterpulsing. The challenges to be addressed prior to real applications are cryogenic operations, small active areas, and efficiency-speed tradeoffs. This thesis presents the effort to address these challenges. A fiber-coupled SNSPD system with a large-area detector in a closed-cycle cryocooler has been built, demonstrating 24% system detection efficiency with a darkcount rate of -1000 counts/sec. As a result, the SNSPD system becomes a convenient tool with a single-mode fiber as the input channel and an SMA cable as the output channel. This system has enabled high-quality polarization-entanglement distribution at the wavelength of 1.3 tm. The 99.2% visibility in Hong-Ou-Mandel (HOM) interference measured in this experiment is the highest HOM visibility that has ever been reported for waveguide-based photon-pair sources. After entanglement is distributed, a pair rate of 5.8 pairs/sec at a pump power of 25 iW and two-photon quantum interference visibility of 97.7% have been measured. On the other hand, increasing the active area of the detector does decrease its speed. To address the issue of efficiency-speed tradeoff, SNSPDs have been integrated with optical nano-antennae. A 9- im-by-9- tm detector with 47% device efficiency and 5-ns reset time has been demonstrated. In terms of active area, device efficiency and speed, this SNSPD has the record performance among single-element SNSPDs. Finally, waveguide-integrated SNSPDs have been proposed and designed. The device structure permits efficient coupling of photons into a short nanowire, and thus, efficient and fast SNSPDs. This structure is compatible with on-chip photonic technologies, including inverse-taper couplers and ring resonators, that have been developed in recent years.

Author : Raasch, Juliane
Publisher : KIT Scientific Publishing
ISBN 13 : 3731507862
Total Pages : 228 pages
Book Rating : 4.64/5 ( download)

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Download or read book Electrical-field sensitive YBa₂Cu₃O₇₋ₓ detectors for real-time monitoring of picosecond THz pulses written by Raasch, Juliane and published by KIT Scientific Publishing. This book was released on 2019-04-23 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Merker, Michael
Publisher : KIT Scientific Publishing
ISBN 13 : 3731509709
Total Pages : 230 pages
Book Rating : 4.07/5 ( download)

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Download or read book Superconducting integrated THz receiver written by Merker, Michael and published by KIT Scientific Publishing. This book was released on 2019-12-17 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Buchholz, Alexander
Publisher : KIT Scientific Publishing
ISBN 13 : 3731511940
Total Pages : 246 pages
Book Rating : 4.46/5 ( download)

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Download or read book Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications written by Buchholz, Alexander and published by KIT Scientific Publishing. This book was released on 2022-07-27 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-temperature superconductors have distinct advantages compared to conventional conductors. Below their critical temperature, superconductors have immeasurably low ohmic losses. To maintain the superconducting state, superconductors require constant cooling. This study aims at identifying the environmental impacts of the application of superconductors in future grid technologies such as superconducting power cables.