マイケルソン型干渉計によるFree Induction Decayの観測

Masaharu Mitsunaga, 久雄 打木, 正浩 松岡

貴夫 藤, 徳昭 鶴町, 栄 川戸 +2 more

Wen‐Hao Chang

We have measured the inductances of various structures used in Josephson junction devices and circuits by means of a novel differential inductance measurement technique. The structures measured include a single superconductor strip line, multisuperconductor strip lines, a single superconductor strip line crossing a ground plane hole, and two coupled superconductor strip lines crossing a ground plane hole. All measured inductances are compared with inductances calculated from various inductance formulas and two numerical inductance calculation programs. Very good agreements are found between the measured inductances and the calculated results for most cases.

Pavel A Apanasevich, S. Ya. Kilin, Alexander P. Nizovtsev +1 more

Victor K. Kornev, Igor I. Soloviev, N. V. Klenov +1 more

We show that voltage response of dc SQUID can be substantially linearized by the introduction of a nonlinear inductance. The inductance tuning allows us to achieve the response linearity as high as 120 dB. Such a nonlinear inductance can be easily formed using Josephson junction inductance. To obtain high dynamic range commensurate to the high response linearity, one can use series array of the nonlinear inductance dc SQUIDs.

Milan Odehnal, V. Petříček