Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Oliver Kieler"'
Autor:
Shekhar Priyadarshi, Marco Kraus, Alexander Fernandez Scarioni, Judith Felgner, Mark Bieler, Johannes Kohlmann, Hao Tian, Oliver Kieler
Publikováno v:
Open Research Europe, Vol 4 (2024)
We discuss the flip-chip mounting process of photodiodes and fiber sleeves on silicon substrates to meet the increasing demand for fabrication of highly integrated and hybrid quantum circuits for operation at cryogenic temperatures. To further increa
Externí odkaz:
https://doaj.org/article/3d86e9955fd647b7902dc2e06459f872
Autor:
Silke Wolter, Julian Linek, Josepha Altmann, Thomas Weimann, Sylke Bechstein, Reinhold Kleiner, Jörn Beyer, Dieter Koelle, Oliver Kieler
Publikováno v:
Micromachines, Vol 12, Iss 4, p 350 (2021)
We present a fabrication technology for nanoscale superconducting quantum interference devices (SQUIDs) with overdamped superconductor-normal metal-superconductor (SNS) trilayer Nb/HfTi/Nb Josephson junctions. A combination of electron-beam lithograp
Externí odkaz:
https://doaj.org/article/7e5b75b0f9b940488156404d2799fe96
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-5
This paper describes recent developments for increasing the output voltage of the Josephson Arbitrary Waveform Synthesizer (JAWS) at PTB. For this purpose, we developed modified broadband Wilkinson power dividers, which enable the operation of two or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df0f234cced208c1b0e8002ab05fe96c
https://doi.org/10.1109/tasc.2021.3055161
https://doi.org/10.1109/tasc.2021.3055161
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-5
We developed a fabrication process to establish large arrays of up to 5-stacked Josephson junctions for the Josephson Arbitrary Waveform Synthesizer (JAWS). SNS-type Josephson junctions with NbxSi1-x barriers are used for this application. By modifyi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbd5ea23cb02f20851b50df8c0614736
https://doi.org/10.1109/tasc.2021.3060678
https://doi.org/10.1109/tasc.2021.3060678
Publikováno v:
IEEE Transactions on Applied Superconductivity. 30:1-5
We recently demonstrated a 1$^{\textrm{st}}$-order axial gradiometer SQUID system which is operated in a liquid He dewar with negligible noise contribution. The achieved close to SQUID limited measured coupled energy sensitivity $\varepsilon_{c}$ of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73e14a70f2a68b242a2e0f3162fdd754
https://doi.org/10.1109/tasc.2020.2989630
https://doi.org/10.1109/tasc.2020.2989630
Autor:
Ralf Behr, Hao Tian, R. Wendisch, Oliver Kieler, Johannes Kohlmann, Karsten Kuhlmann, Rolf-Werner Gerdau
Publikováno v:
IEEE Transactions on Applied Superconductivity. 30:1-5
To make the experimental setup of the Josephson arbitrary waveform synthesizer less complex by reducing the number of RF cables between room and cryogenic temperature, we developed on-chip RF power dividers. By integration of these components, we can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1877a6dd87d69a38c09b6fd8b3410a40
https://doi.org/10.1109/tasc.2020.2970216
https://doi.org/10.1109/tasc.2020.2970216
Autor:
Oliver Kieler, V. E. Lovtsyus, Ralf Behr, A. I. Bykov, A. S. Katkov, A. N. Petrovskaya, V. I. Shevtsov
Publikováno v:
Measurement Techniques. 63:295-300
A prototype Josephson quantum standard for synthesizing sine waves characterised by low-level harmonics and high accuracy was developed, opening up new possibilities for metrological support in the area of ac voltage. The standard includes a cryogeni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4d5f145ebf61e757a1c3f948be608e1
https://doi.org/10.1007/s11018-020-01786-0
https://doi.org/10.1007/s11018-020-01786-0
Autor:
Andrey I. Bykov, Viktor E. Lovtsyus, Ralf Behr, Oliver Kieler, Alexander S. Katkov, Vladimir I. Shevtsov, Anastasia N. Petrovskaya
Publikováno v:
Izmeritel`naya Tekhnika. :39-43
Prototype of quantum standard based on the Josephson effect for synthesis sine wave with low level harmonics and high accuracy was developed at VNIIM, which opens up new possibilities for metrological support in the field of АС voltage. The standar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f22b7a7da4e4b6559dafd1ed750d0d55
https://doi.org/10.32446/0368-1025it.2020-4-39-43
https://doi.org/10.32446/0368-1025it.2020-4-39-43
Autor:
Stephan Bauer, Ralf Behr, Jonas Herick, Oliver Kieler, Marco Kraus, Hao Tian, Yoawaret Pimsut, Luis Palafox
Publikováno v:
Measurement Science and Technology. 34:032001
About 60 years after the discovery of the Josephson effect, electrical DC voltage calibrations are routinely performed worldwide—mostly using automated Josephson voltage standards (JVSs). Nevertheless, the field of electrical quantum voltage metrol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21e495a1dec043c27d7730380b86dcc2
https://doi.org/10.1088/1361-6501/aca5a5
https://doi.org/10.1088/1361-6501/aca5a5
Autor:
Ralf Behr, Helge Malmbekk, Muhammad Nadeem Akram, Bjornar Karlsen, Per Ohlckers, Thai Anh Tuan Nguyen, Oliver Kieler
Publikováno v:
IEEE Transactions on Applied Superconductivity. 29:1-8
A commercially available InGaAs p-i-n photodiode chip has been custom packaged and high-speed operated in liquid helium. The photodiode was driven by light pulses using a dc-biased 1310-nm laser, a Mach-Zehnder modulator, and a return-to-zero pulse p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5800d12fde4875d4db33bee0e381b21b
https://doi.org/10.1109/tasc.2019.2901573
https://doi.org/10.1109/tasc.2019.2901573