2013 IEEE 14th International Superconductive Electronics Conference (ISEC)最新文献_第4页

Simulation and implementation of an 8-bit carry look-ahead adder using adiabatic quantum-flux-parametron 采用绝热量子通量参数的8位进位预判加法器的仿真与实现

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604271

K. Inoue, N. Takeuchi, Y. Yamanashi, N. Yoshikawa

引用次数: 5

Superconducting digital-RF receiver with high-speed data recording capability 具有高速数据记录能力的超导数字射频接收机

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604274

A. E. Lehmann, D. Kirichenko, A. Kirichenko, S. Sarwana, D. Gupta

引用次数: 1

Modeling the effects of fabrication spreads and noise on series coupled arrays of bi-SQUIDs 模拟制造扩散和噪声对双squid串联耦合阵列的影响

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604303

S. Berggren, P. Longhini, A. D. de Escobar, A. Palacios, O. Mukhanov, G. Prokopenko

引用次数: 6

Operation of single-flux-quantum logic cells based on all-NbN integrated circuit technology 基于全nbn集成电路技术的单通量量子逻辑单元运算

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604278

H. Terai, K. Makise, Zhen Wang

引用次数: 2

60-GHz demonstration of an SFQ half-precision bit-serial floating-point adder using 10 kA/cm2 Nb process 采用10ka /cm2 Nb工艺的SFQ半精度位串行浮点加法器的60 ghz演示

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604272

T. Kato, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi, S. Nagasawa

{"title":"60-GHz demonstration of an SFQ half-precision bit-serial floating-point adder using 10 kA/cm2 Nb process","authors":"T. Kato, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi, S. Nagasawa","doi":"10.1109/ISEC.2013.6604272","DOIUrl":"https://doi.org/10.1109/ISEC.2013.6604272","url":null,"abstract":"We are developing a large-scale reconfigurable data-path (LSRDP) based on single-flux-quantum (SFQ) circuits to establish a fundamental technology for future high-performance computing systems. In the LSRDP, an SFQ floating-point adder (FPA) is one of the main and most complicated circuit blocks. In our previous study, we implemented an SFQ half-precision (16-bit) bit-serial FPA using the ISTEC 2.5 kA/cm2 standard process, and demonstrated the correct operations at 24 GHz by on-chip high-speed tests. In this study, we designed and implemented an SFQ half-precision bit-serial FPA using a cell library for the AIST 10 kA/cm2 Nb nine-metal-layer process (ADP2), and carried out on-chip high speed tests. The designed FPA contains 9661 Josephson junctions and occupies a circuit area of 12.95 mm2. Its target operation frequency is 50 GHz. We have demonstrated the correct operation of the FPA at the maximum frequency of 62 GHz although there is a functional error in the design. The measured DC bias margin ranges from 102% to 108% at 50 GHz operation. The total power consumption is measured to be 2.9 mW.","PeriodicalId":233581,"journal":{"name":"2013 IEEE 14th International Superconductive Electronics Conference (ISEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130992761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Superconducting tunnel junction (STJ) detectors for ion-charge-number sensitive mass spectrometry 用于离子电荷数敏感质谱的超导隧道结(STJ)探测器

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604258

M. Ohkubo, N. Zen, M. Ukibe, S. Shiki, K. Koike

引用次数: 0

Flux flushing in superconducting niobium films 超导铌薄膜中的通量冲洗

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604314

M. D. de Andrade, S. Berggren, B. Taylor, A. D. de Escobar

引用次数: 0

YBCO current leads for adiabatic demagnetization refrigeration of X-ray detectors in space 用于空间x射线探测器绝热退磁制冷的YBCO电流引线

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604293

R. Webber, J. Delmas, D. Yohannes, J. Vivalda

{"title":"YBCO current leads for adiabatic demagnetization refrigeration of X-ray detectors in space","authors":"R. Webber, J. Delmas, D. Yohannes, J. Vivalda","doi":"10.1109/ISEC.2013.6604293","DOIUrl":"https://doi.org/10.1109/ISEC.2013.6604293","url":null,"abstract":"Future satellite missions carrying X-ray spectrometers will be cooled to milliKelvin temperatures by multistage Adiabatic Demagnetization Refrigerators (ADR), which, in turn will be precooled by closed-cycle cryocoolers. Each stage of the ADR will use a low temperature superconducting magnet, which will periodically be energized via high temperature superconducting (HTS) leads. The heat-leak and required refrigeration for these leads has historically been a relatively large burden on the mission energy budget; hence the motivation for a lower heat leak. Our suggested approach is to fabricate inherently tough and flexible leads in the 2A to 10A range from commercially available YBa2Cu3O7-X (YBCO) tape. The substrates of such tapes are tough, strong, low thermal conductivity metals which can be cut longitudinally into thin strips approximately 500 micrometers in width using a precision dicing saw. In the region of the thermal gradient, the protective silver coating is removed and replaced by a non-conducting encapsulant; the as-manufactured silver coating is left at the ends to make electrical joints. This is a process which should lend itself well to small-scale manufacture. We have demonstrated the feasibility of several key facets of the design and expect that the overall result of this project will be to reduce significantly the size, weight and power requirement of the satellite-borne cryosystem and at the same time produce a lighter more robust lead structure.","PeriodicalId":233581,"journal":{"name":"2013 IEEE 14th International Superconductive Electronics Conference (ISEC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116807760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coherent radiation in serial arrays of Josephson junctions 约瑟夫逊结串行阵列中的相干辐射

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604302

A. Grib, M. Mans, M. Buenfeld, J. Scherbel, F. Schmidl, P. Seidel, H. Schneidewind

引用次数: 1

Reducing surface loss in 3D microwave copper cavities for superconducting transmon qubits 减少超导超导量子比特三维微波铜腔的表面损耗

2013 IEEE 14th International Superconductive Electronics Conference (ISEC) Pub Date : 2013-07-07 DOI: 10.1109/ISEC.2013.6604283

D. Bogorin, M. Ware, Douglas McClure, S. Sorokanich, B. Plourde

引用次数: 5