发明申请
US20090261319A1 Josephson quantum computing device and integrated circuit using such devices
有权
约瑟夫森量子计算设备和使用这种设备的集成电路
- 专利标题： Josephson quantum computing device and integrated circuit using such devices
- 专利标题（中）： 约瑟夫森量子计算设备和使用这种设备的集成电路
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申请号： US11658647申请日： 2005-07-25
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公开(公告)号： US20090261319A1公开(公告)日： 2009-10-22
- 发明人: Sadamichi Maekawa , Taro Yamashita , Saburo Takahshi
- 申请人： Sadamichi Maekawa , Taro Yamashita , Saburo Takahshi
- 优先权： JP2004-219284 20040727; JP2004-375008 20041224
- 国际申请： PCT/JP05/13585 WO 20050725
- 主分类号： H01L39/22
- IPC分类号： H01L39/22
摘要：
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 (1) comprises: a superconducting ring member (10) having a π-junction (6) and a 0-junction (7); and a quantum state detecting member (20) 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 (10) are regarded as quantum bits. The bonding and antibonding states as the quantum bits are read out by the quantum state detecting member (20). The two bit controlled NOT gate operation can be performed by the two quantum bits comprising said quantum bits.
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