全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
科学通报  2011 

超导量子比特中铝超导隧道结的性能

, PP. 2923-2927

Keywords: Al/Al2O3/Al,超导隧道结,电子束蒸发,超导量子比特

Full-Text   Cite this paper   Add to My Lib

Abstract:

超导隧道结约瑟夫森结是超导量子比特的基本元件.用双层光刻胶构成悬空掩模,用电子束斜蒸发的方法制备Al/Al2O3/Al隧道结,用一定的氧气气压氧化铝膜作为势垒层.势垒层质量直接影响铝超导隧道结的各项电学参数.深入研究了铝超导隧道结的超导临界电流密度Jc和面积归一化电阻Rc(正常态电阻RN与结面积的乘积)与势垒层生长条件的关系,通过改变势垒层生长的氧分压与氧化时间来控制铝超导隧道结的Jc和Rc,以使此工艺所制备的铝隧道结漏电流小,结参数易于控制,满足制备超导量子比特的要求.

References

[1]  2 Cui B, Zhang X Q, Sun L, et al. A high-performance narrowband high temperature superconducting filter. Chinese Sci Bull, 2010, 55:1367-1371??
[2]  4 Gao L, Guo J, Wang Y H, et al. A 23 GHz high-temperature superconducting microstrip filter for radio astronomy. Chinese Sci Bull, 2009,54: 3485-3488??
[3]  5 Wei B, Guo X B, Piao Y L, et al. Field test of HTS receivers on CDMA demonstration cluster in China. Chinese Sci Bull, 2009, 54:612-615??
[4]  11 Romans E J, Osley E J, Young L, et al. Three-dimensional nanoscale superconducting quantum interference device pickup loops. ApplPhys Lett, 2010, 97: 222506??
[5]  13 Clarke J, Wilhelm F K. Superconducting quantum bits. Nature, 2008, 453: 1031-1042??
[6]  18 Chiorescu I, Bertet P, Semba K, et al. Coherent dynamics of a flux qubit coupled to a harmonic oscillator. Nature, 2004, 431: 159-162??
[7]  19 Friedmann J R, Patel V, Chen W, et al. Quantum superposition of distinct macroscopic states. Nature, 2000, 406: 43-46??
[8]  20 Lotkhov S V, Tolkacheva E M, Balashov D V, et al. Low hysteretic behavior of Al/AlOx/Al Josephson junctions. Appl Phys Lett, 2006, 89:132115??
[9]  1 Xu W W, Chen J, Kang L, et al. Extraction of the spectral information of terahertz signals using superconducting Josephson junction.Chinese Sci Bull, 2010, 53: 1247-1251
[10]  3 Xia H H, Zhou C X, Zuo T, et al. Development of high-temperature superconducting filters operating at temperatures above 90 K. ChineseSci Bull, 2009, 54: 3596-3599??
[11]  6 You L X, Shen X F, Yang X Y, et al. Single photon response of superconducting nanowire single photon detector. Chinese Sci Bull, 2010,55: 441-445??
[12]  7 Wang J P, Li Y B, Kang L, et al. Design and fabrication of superconducting HEB mixer. Chinese Sci Bull, 2009, 54: 2013-2017??
[13]  8 Van D W C H, Ter H A C R, Wilhelm F K. Quantum superposition of macroscopic persistent-current states. Science, 2000, 290: 773-777??
[14]  9 Mooij J E, Orlando T P, Levitov L, et al. Josephson persistent-current qubit. Science, 1999, 285: 1036-1039??
[15]  10 Wirth T, Lisenfeld J, Lukashenko A, et al. Microwave readout scheme for a Josephson phase qubit. Appl Phys Lett, 2010, 97: 262508??
[16]  12 Clarke J. Flux qubit completes the hat trick. Science, 2003, 299: 1850-1851??
[17]  14 Chiorescu I, Nakamura Y, Harmans C J M P, et al. Coherent quantum dynamics of a superconducting flux qubit. Science, 2003, 299:1869-1871??
[18]  15 Orlando T P, Mooij J E, Tian L, et al. Superconducting persistent-current qubit. Phys Rev B, 1999, 60: 15398??
[19]  16 Nakamura Y, Pashkin Y A, Tsai J S. Coherent control of macroscopic quantum states in a single-Cooper-pair box. Nature, 1999, 398:786-788??
[20]  17 Blatter G, Geshkenbein V B, Ioffe L B. Design aspects of superconducting-phase quantum bits. Phys Rev B, 2001, 63: 174511??
[21]  21 Lang K M, Nam S, Aumentado J, et al. Banishing quasiparticles from Josephson-junction qubits: Why and how to do it. IEEE Trans ApplSupercond, 2003, 13: 989-991??
[22]  22 Berkley A J, Xu H, Gubrud M A, et al. Decoherence in a Josephson-junction qubit. Phys Rev B, 2003, 68: 060502??
[23]  23 Dolan G J. Offset masks for lift-off photoprocessing. Appl Phys Lett, 1977, 31: 337-339??
[24]  24 Holmqvist T, Meschke M, Pekola J P. Double oxidation scheme for tunnel junction fabrication. J Vac Sci Technol B, 2008, 26:1071-1023

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133