公开(公告)号：US20210305987A1

公开(公告)日：2021-09-30

申请号：US16831241

申请日：2020-03-26

Applicant: International Business Machines Corporation

Inventor： Andreas Fuhrer Janett ,  Fabrizio Nichele ,  Markus Fabian Ritter ,  Heike Erika Riel

IPC: H03K19/195 ,  H01L39/22 ,  H03K17/92 ,  G06N10/00

Abstract: The invention is notably directed to a method of operating a superconducting channel. The method relies on a device including: a potentially superconducting material; a gate electrode; and an electrically insulating medium. A channel is defined by the potentially superconducting material. The gate electrode positioned adjacent to the channel, such that an end surface of the gate electrode faces a portion of the channel. The electrically insulating medium is arranged in such a manner that it electrically insulates the gate electrode from the channel. Rendering the channel superconducting by cooling down the device. Next, a voltage difference is applied between the gate electrode and the channel to inject electrons in the channel through the electrically insulating medium and thereby generate a gate current between the gate electrode and the channel. The electrons are injected with an average energy sufficient to modify a critical current IC of the channel.