Direct observation system for sub-pico second waveform in time and space

亚皮秒波形时空直接观测系统

• 批准号: 61850066
• 负责人: SAWADA Yasuji
• 金额: $ 4.54万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850066/
• 关键词: Fluxon-antifluxon collison; Fluxoid propagation; Fluxon pair annihilation; Fluxon array propagation; Fluxoid array propagation; 時空間波形解析装置; ジョセフソンサンプラー; ソリトン・反ソリトン対消滅; ジョセフソン接合; ジョセフソン・サンプリング・システム; ブリーザ・ディケィ; ローレンツ収縮; サブピコ秒時空間波形解析

We have constructed a direct observation system of fluxon-antifluxon collision in time and space coordinate, and discussed conditions for the observation of waveforms. The system which is a modification of the Josephson sampling system comprises a mechanical delay, an electrical delay, a feedback circuit, and a superconducting circuit on a chip. We have observed the waveforms of the fluxon-antifuxon collision and aniihilation in time and space coordinates which is the dirst observation of the quantum soliton interaction in the solid. We also investigated the time evolutions of fluxon-array waveform in space axis when two fluxon-arrays propagated opposite direction each other, and then carrid out a head-on collision. The observed waveform show that the two fluxon-arrays annihilate or pass through each other after head-on collisions, depending upon the valus of line bias current. We also observed propagating fluxoid-array waveforms in time and space which propagated on a fluxoid transmission line composed of 6J-SQUIDs. The 6J-SQUID has 6 junctions in which 4 junctions are used as equivalent inductance.

我们建立了一个时空坐标下的通量-反通量碰撞直接观测系统，并讨论了观测波形的条件。该系统是对约瑟夫森采样系统的改进，它包括机械延迟、电气延迟、反馈电路和片上超导电路。我们在时间和空间坐标中观测到了磁通-反磁通碰撞和湮灭的波形，这是首次观测到固体中的量子孤子相互作用。我们还研究了当两个磁通子阵列反向传播并发生迎头碰撞时，磁通子阵列波形在空间轴上的时间演化。观察到的波形表明，两个磁通子阵列在迎头相撞后相互湮灭或穿透，这取决于线偏置电流的大小。我们还观察到了在由6J-SQUID组成的磁通传输线上传播的时空传播的磁通阵列波形。6J-SQUID有6个结点，其中4个结点用作等效电感。

项目成果

沢田康次 その他: "極微構造エレクトロニクス" オーム社, 522 (1986)

Koji Sawada 其他：《微结构电子》Ohmsha，522 (1986)

Y.Sawada,et.al.: "英文版「超伝導電子工学」(仮称)" オーム社, (1987)

Y. Sawada 等人：“英文版‘超导电子’（暂定名）” Ohmsha, (1987)

A.Fujimaki; K.Nakajima; Y.Sawada: Jpn. J. Appl. Phys.26. 74-80 (1987)

A.藤卷；

K. Nakajima, A. Fujimaki, and Y.Sawada: "Direct observation of the current oscillation in a dcSQUID" J. Appl. Phys.60. 3786-3788 (1986)

K. Nakajima、A. Fujimaki 和 Y.Sawada：“直接观察 dcSQUID 中的电流振荡” J. Appl。

A. Jufimaki, K. Nakajima, and Y.Sawada: "Dynamical properties of fluxon propagation in a Josephson Transmission line with a trigger turning point" J. Appl. Phys.61. 5471-5474 (1987)

A. Jufimaki、K. Nakajima 和 Y.Sawada：“具有触发转折点的约瑟夫森传输线中通量子传播的动态特性”J. Appl。