JPS6441879A - Superconductive quantum interferometer - Google Patents

Superconductive quantum interferometer

Info

Publication number
JPS6441879A
JPS6441879A JP62196192A JP19619287A JPS6441879A JP S6441879 A JPS6441879 A JP S6441879A JP 62196192 A JP62196192 A JP 62196192A JP 19619287 A JP19619287 A JP 19619287A JP S6441879 A JPS6441879 A JP S6441879A
Authority
JP
Japan
Prior art keywords
thin film
josephson junction
substrate
superconductor
film electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62196192A
Other languages
Japanese (ja)
Inventor
Hideaki Nakane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62196192A priority Critical patent/JPS6441879A/en
Publication of JPS6441879A publication Critical patent/JPS6441879A/en
Pending legal-status Critical Current

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  • Measuring Magnetic Variables (AREA)
  • Superconductor Devices And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE:To realize a superconducting quantum interferometer operable at a high temperature, by slenderizing a part of a superconductor thin film electrode and a step is provided at a part of a substrate to form a weak coupling type Josephson junction orthogonal to the electrode. CONSTITUTION:A thin film made of a high-temperature superconductor such as a mixed oxide of Hf, Sc, Y, rare earth element, Sr, F, Cu and Ba used as superconductive material, especially, YBa2Cu3O7-x (0<x<1) is formed on a substrate 1. Then, an opening 3 is arranged at the center of a superconductor thin film electrode 2 being interlinked with a magnetic flux and a slender part thereof 2 is provided near the opening to form a Josephson junction 4. In order to create a weak coupling part, the portion of the Josephson junction 4 is so arranged that the substrate 1 is provided with a step 5 or a part is built to lower a superconduction critical temperature at a fine part of the superconductor thin film electrode 2 by implanting corpuscular rays or the like, thereby making up a construction of a superconduction-normal conduction-super conduction type Josephson junction.
JP62196192A 1987-08-07 1987-08-07 Superconductive quantum interferometer Pending JPS6441879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62196192A JPS6441879A (en) 1987-08-07 1987-08-07 Superconductive quantum interferometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62196192A JPS6441879A (en) 1987-08-07 1987-08-07 Superconductive quantum interferometer

Publications (1)

Publication Number Publication Date
JPS6441879A true JPS6441879A (en) 1989-02-14

Family

ID=16353723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62196192A Pending JPS6441879A (en) 1987-08-07 1987-08-07 Superconductive quantum interferometer

Country Status (1)

Country Link
JP (1) JPS6441879A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253675A (en) * 1991-03-22 1993-10-19 Nitto Kohki Co., Ltd. Apparatus for connecting double vacuum pipes for conducting cryogenic fluid
US5273009A (en) * 1991-08-26 1993-12-28 Ngk Insulators, Ltd. Silicon-nitride-inserted piston
JPH06500669A (en) * 1991-03-19 1994-01-20 コンダクタス　インコーポレイテッド Grain boundary bonding in high-temperature superconductor films
JP2021519459A (en) * 2018-03-26 2021-08-10 グーグル エルエルシーＧｏｏｇｌｅ ＬＬＣ Reduction of parasitic capacitance of qubit system
JP2022126641A (en) * 2018-03-26 2022-08-30 グーグル エルエルシー Reduction in parasitic capacitance of quantum bit system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06500669A (en) * 1991-03-19 1994-01-20 コンダクタス　インコーポレイテッド Grain boundary bonding in high-temperature superconductor films
US5253675A (en) * 1991-03-22 1993-10-19 Nitto Kohki Co., Ltd. Apparatus for connecting double vacuum pipes for conducting cryogenic fluid
US5273009A (en) * 1991-08-26 1993-12-28 Ngk Insulators, Ltd. Silicon-nitride-inserted piston
JP2021519459A (en) * 2018-03-26 2021-08-10 グーグル エルエルシーＧｏｏｇｌｅ ＬＬＣ Reduction of parasitic capacitance of qubit system
JP2022126641A (en) * 2018-03-26 2022-08-30 グーグル エルエルシー Reduction in parasitic capacitance of quantum bit system

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