The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2012
Filed:
Jul. 25, 2005
Sadamichi Maekawa, Sendai, JP;
Taro Yamashita, Sendai, JP;
Saburo Takahashi, Iwanuma, JP;
Japan Science and Technology Agency, Saitama, JP;
Abstract
A Josephson quantum computing device and an integrated circuit using Josephson quantum computing devices which can realize a NOT gate operation controlled with 2 bits will be provided. The Josephson quantum computing device () comprises: a superconducting ring member () having a π-junction () and a 0-junction (); and a quantum state detecting member () constituted by a superconducting quantum interference device arranged outside of the superconducting ring member, wherein a bonding and an antibonding state brought about by a tunneling effect between a |↑> and a |↓> state as two states degenerate in energy of the superconducting ring member () are regarded as quantum bits. The bonding and antibonding states as the quantum bits are read out by the quantum state detecting member (). The two bit controlled NOT gate operation can be performed by the two quantum bits comprising said quantum bits.