TY - JOUR
T1 - Study on sub-THz signal input for superconducting electronic devices
AU - Kawayama, Iwao
AU - Doda, Yasushi
AU - Kinjo, Ryuhei
AU - Kiwa, Toshihiko
AU - Murakami, Hironaru
AU - Tonouchi, Masayoshi
N1 - Funding Information:
UCLA and for insightful discussions on the scope and applications of the simulations presented here. In addition, WBB thanks the National Secretariat of Higher Education, Science, Technology, and Innovation of Ecuador, SENESCYT, for funding this project through a doctoral scholarship (CI:1711298438) under the ‘Uni-versidades de Excelencia programme. CF acknowledges funding provided by the Australian Research Council’s Discovery Projects (grants DP130102078 and DP150104329). WBB is the recipient of the Olin Eggen Scholarship at Mount Stromlo Observatory. RMC is the recipient of an Australian Research Council Future Fellowship (FT110100108). This work was further supported by resources provided by the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia.
Funding Information:
We thank the anonymous referee for providing insightful comments on the manuscript. This research was supported by the Research School of Astronomy and Astrophysics and by the NCI Facility at the Australian National University (grants n72 and ek9). WBB thanks professor Mark Morris for hosting him during a visit to UCLA and for insightful discussions on the scope and applications of the simulations presented here. In addition, WBB thanks the National Secretariat of Higher Education, Science, Technology, and Innovation of Ecuador, SENESCYT, for funding this project through a doctoral scholarship (CI:1711298438) under the 'Universidades de Excelencia programme. CF acknowledges funding provided by the Australian Research Council's Discovery Projects (grants DP130102078 and DP150104329). WBB is the recipient of the Olin Eggen Scholarship at Mount Stromlo Observatory. RMC is the recipient of an Australian Research Council Future Fellowship (FT110100108). This work was further supported by resources provided by the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia.
Funding Information:
We thank the anonymous referee for providing insightful comments on the manuscript. This research was supported by the Research School of Astronomy and Astrophysics and by the NCI Facility at the Australian National University (grants n72 and ek9). WBB thanks professor Mark Morris for hosting him during a visit to
PY - 2007/3
Y1 - 2007/3
N2 - Development of ultrafast optical interfaces that can operate in sub-terahertz region is important to apply superconducting electronic devices to the high-end systems. We have performed several fundamental researches to realize the ultrafast optical input interface for superconducting electronic devices. Firstly, we observed optical response of amorphous Ge thin films, and the results indicated that an amorphous Ge photoconductive switch could stably operate in a terahertz frequency range as an optical-to-electrical signal converter in the low-temperature region below Tc of YBCO. Next, we have fabricated optical-to-electrical signal conversion system with photomixing technique, and we have demonstrated the generation and the detection of high frequency signals over 50 GHz. Finally, we have observed optical responses of a Josephson vortex flow transistor under irradiation of femtosecond laser pulses, and the results suggeste that the device has high potential as an optical interface.
AB - Development of ultrafast optical interfaces that can operate in sub-terahertz region is important to apply superconducting electronic devices to the high-end systems. We have performed several fundamental researches to realize the ultrafast optical input interface for superconducting electronic devices. Firstly, we observed optical response of amorphous Ge thin films, and the results indicated that an amorphous Ge photoconductive switch could stably operate in a terahertz frequency range as an optical-to-electrical signal converter in the low-temperature region below Tc of YBCO. Next, we have fabricated optical-to-electrical signal conversion system with photomixing technique, and we have demonstrated the generation and the detection of high frequency signals over 50 GHz. Finally, we have observed optical responses of a Josephson vortex flow transistor under irradiation of femtosecond laser pulses, and the results suggeste that the device has high potential as an optical interface.
KW - Amorphous Ge
KW - Josephson vortex flow transistor
KW - Photomixing
KW - Ultrafast optical interface
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U2 - 10.1093/ietele/e90-c.3.588
DO - 10.1093/ietele/e90-c.3.588
M3 - Article
AN - SCOPUS:33947160117
SN - 0916-8524
VL - E90-C
SP - 588
EP - 594
JO - IEICE Transactions on Electronics
JF - IEICE Transactions on Electronics
IS - 3
ER -