公开(公告)号：US06541789B1

公开(公告)日：2003-04-01

申请号：US09385710

申请日：1999-08-30

申请人： Tetsuro Sato ,  Jian-Guo Wen ,  Naoki Koshizuka ,  Shoji Tanaka

发明人： Tetsuro Sato ,  Jian-Guo Wen ,  Naoki Koshizuka ,  Shoji Tanaka

IPC分类号： H01L3922

CPC分类号： H01L39/2496 ,  H01L39/225

摘要： In a method of manufacturing a Josephson junction, a first superconductive layer is formed on a substrate. An insulating film is formed on the first superconductive layer. The insulating film is etched to have an inclination portion. The first superconductive layer is etched using the etched insulating film as a mask, to have an inclination portion. A barrier layer is formed on a surface of the inclination portion of the first superconductive layer. A second superconductive layer is formed on the barrier layer and the inclination portion of the insulating layer.

摘要翻译： 在制造约瑟夫逊结的方法中，在基板上形成第一超导层。 绝缘膜形成在第一超导层上。 绝缘膜被蚀刻以具有倾斜部分。 使用蚀刻绝缘膜作为掩模蚀刻第一超导层，以具有倾斜部分。 在第一超导层的倾斜部分的表面上形成阻挡层。 在隔离层和绝缘层的倾斜部分上形成第二超导层。

公开(公告)号：US06263219B1

公开(公告)日：2001-07-17

申请号：US09275187

申请日：1999-03-23

申请人： Tatsuoki Nagaishi

发明人： Tatsuoki Nagaishi

IPC分类号： H01L3922

CPC分类号： H01L39/2496 ,  H01L39/225 ,  Y10S428/93 ,  Y10S505/701

摘要： A SQUID made of an oxide superconducting thin film is formed on a sapphire substrate. CeO2 film, RBa2Cu3O7−x film (“R” indicates a rare earth element chosen among a group formed of Yb, Er, Ho, Y, Dy, Gd, Eu, Sm and Nd) and SrTiO3 film are deposited on the substrate top of the sapphire substrate successively. Furthermore, an oxide superconducting thin film to form a SQUID is deposited on the SrTiO3 film.

摘要翻译： 在蓝宝石衬底上形成由氧化物超导薄膜制成的SQUID。 CeO 2膜，RBa 2 Cu 3 O 7-x膜（“R”表示选自由Yb，Er，Ho，Y，Dy，Gd，Eu，Sm和Nd组成的组中的稀土元素）和SrTiO 3膜沉积在 蓝宝石衬底。 此外，在SrTiO 3膜上沉积形成SQUID的氧化物超导薄膜。

公开(公告)号：US06815708B1

公开(公告)日：2004-11-09

申请号：US10048481

申请日：2002-02-08

申请人： Ienari Iguchi ,  Eiji Kume

发明人： Ienari Iguchi ,  Eiji Kume

IPC分类号： H01L3922

CPC分类号： H01L39/225 ,  H01L27/18

摘要： An optic superconducting circuit element (10) is disclosed that is operable to transmit and receive on an identical chip an electromagnetic wave having frequencies in an extended frequency band ranging from microwave to THz frequency bands and with high sensitivity. The optic superconducting circuit element (10) includes the chip (3), and a superconducting electromagnetic wave oscillating (generating and transmitting) source (16) and a superconducting Josephson junction device (14) disposed in close vicinity to each other on the chip (3), the superconducting Josephson junction device (14) detecting the electromagnetic wave transmitted from the superconducting electromagnetic wave oscillating (generating and transmitting) source (16). The optic superconducting circuit element (10) operates in a manner such that the superconducting electromagnetic wave oscillating (generating and transmitting) source (16) is biased at a fixed electric current to generate an electromagnetic wave, and the superconducting Josephson junction device (14) is biased at a fixed current whereupon the point of biasing is successively shifted in response to a change according to the presence or absence of the electromagnetic wave to derive continuous spectral information thereof.

摘要翻译： 公开了一种光学超导电路元件（10），用于在相同的芯片上发射和接收具有范围从微波到THz频带和高灵敏度的扩展频带的频率的电磁波。 光学超导电路元件（10）包括芯片（3）和超导电磁波振荡（产生和发送）源（16）和超导约瑟夫逊结器件（14），其设置在芯片上彼此靠近 3），超导约瑟夫逊结装置（14）检测从超导电磁波（发生和发送）源（16）发射的电磁波。 光超导电路元件（10）以使得超导电磁波振荡（产生和发送）源（16）以固定电流偏置以产生电磁波的方式操作，并且超导约瑟夫逊连接装置（14） 偏置在固定电流，因此，根据电磁波的存在或不存在，偏置点被连续移动以导出其连续的光谱信息。

公开(公告)号：US06627916B2

公开(公告)日：2003-09-30

申请号：US09823895

申请日：2001-03-31

申请人： Mohammad H. S. Amin ,  Timothy Duty ,  Alexander Omelyanchouk ,  Geordie Rose ,  Alexandre Zagoskin ,  Jeremy P. Hilton

发明人： Mohammad H. S. Amin ,  Timothy Duty ,  Alexander Omelyanchouk ,  Geordie Rose ,  Alexandre Zagoskin ,  Jeremy P. Hilton

IPC分类号： H01L3922

CPC分类号： G01R33/0354 ,  H01L39/225 ,  H01L39/2496 ,  Y10S505/874 ,  Y10S977/933

摘要： A solid state dc-SQUID includes a superconducting loop containing a plurality of Josephson junctions, wherein an intrinsic phase shift is accumulated through the loop. In an embodiment of the invention, the current-phase response of the dc-SQUID sits in a linear regime where directional sensitivity to flux through the loop occurs. Changes in the flux passing through the superconducting loop stimulates current which can be quantified, thus providing a means of measuring the magnetic field. Given the linear and directional response regime of the embodied device, an inherent current to phase sensitivity is achieved that would otherwise be unobtainable in common dc-SQUID devices without extrinsic intervention.

摘要翻译： 固态dc-SQUID包括包含多个约瑟夫逊结的超导回路，其中本征相移通过回路积累。 在本发明的一个实施例中，dc-SQUID的电流相位响应处于线性状态，其中发生通过环路的通量的方向灵敏度。 通过超导环路的通量的变化会刺激可量化的电流，从而提供测量磁场的方法。 给定所体现的装置的线性和方向响应方案，实现固有的电流到相位灵敏度，否则在相同的dc-SQUID装置中将无法获得，而不需要外部干预。

公开(公告)号：US06670630B2

公开(公告)日：2003-12-30

申请号：US10121800

申请日：2002-04-12

申请人： Alexandre Blais ,  Jeremy P. Hilton

发明人： Alexandre Blais ,  Jeremy P. Hilton

IPC分类号： H01L3922

CPC分类号： G06N99/002 ,  B82Y10/00 ,  H01L27/18 ,  H01L39/22 ,  H01L39/225 ,  Y10S977/933

摘要： A superconducting structure that includes a mesoscopic phase device and a mesoscopic charge device. The superconducting structure further includes a mechanism for coupling the mesoscopic phase device and the mesoscopic charge device so that the quantum state of the mesoscopic phase device and the quantum state of the mesoscopic charge device interact. In another aspect, the superconducting structure includes a mechanism for reading out the quantum state of the mesoscopic charge device.

公开(公告)号：US06649929B2

公开(公告)日：2003-11-18

申请号：US10150035

申请日：2002-05-16

申请人： Dennis M. Newns ,  Chang C. Tsuei

发明人： Dennis M. Newns ,  Chang C. Tsuei

IPC分类号： H01L3922

CPC分类号： G06N99/002 ,  B82Y10/00 ,  H01L39/225 ,  H01L39/228 ,  Y10S977/933

摘要： A method and structure for a d-wave qubit structure includes a qubit disk formed at a multi-crystal junction (or qubit ring) and a superconducting screening structure surrounding the qubit. The structure may also include a superconducting sensing loop, where the superconducting sensing loop comprises an s-wave superconducting ring. The structure may also include a superconducting field effect transistor.

公开(公告)号：US06605225B1

公开(公告)日：2003-08-12

申请号：US09646701

申请日：2000-09-21

申请人： Tsutomu Yamashita ,  Sang-Jae Kim

发明人： Tsutomu Yamashita ,  Sang-Jae Kim

IPC分类号： H01L3922

CPC分类号： H01L39/2496 ,  B82Y10/00 ,  Y10S505/832 ,  Y10S505/922

摘要： A three-dimensional element is fabricated from a high-temperature superconductor. The method and apparatus can fabricate, for example, a single-electron tunnel device or an intrinsic Josephson device which utilize the layer structure peculiar to the high-temperature superconductor, with machining from the side surface of a monocrystal or thin film. In the focused-ion beam etching, a substrate holder which is rotatable about 360°, is rotated, at the minimum, through an angle of about 90°, and the thin film or monocrystal on the substrate is etched from the side surface thereof so as to fabricate the element. After the thin film or monocrystal is machined from above by means of an focused-ion beam to thereby form a bridge having a junction length, the sample is rotated by about 90° (270°). Subsequently, a multi-layer current path layer is formed through side-surface machining. The junction length is accurately controlled through measurement of the current path length from an image display.

摘要翻译： 三维元件由高温超导体制成。 该方法和装置可以制造例如利用单晶或薄膜的侧表面进行加工的利用高温超导体特有的层结构的单电子隧道装置或固有约瑟夫逊装置。 在聚焦离子束蚀刻中，可旋转约360°的衬底保持器至少旋转大约90°的角度，并且从其侧表面蚀刻衬底上的薄膜或单晶，因此 以制造元素。 在通过聚焦离子束从上面加工薄膜或单晶之后，形成具有结长的桥，样品旋转大约90°（270°）。 随后，通过侧面加工形成多层电流通路层。 通过从图像显示器测量当前路径长度来精确控制结长度。

公开(公告)号：US06563310B2

公开(公告)日：2003-05-13

申请号：US09855487

申请日：2001-05-14

申请人： Alexandre M. Zagoskin

发明人： Alexandre M. Zagoskin

IPC分类号： H01L3922

CPC分类号： G06N99/002 ,  B82Y10/00 ,  H01L39/225 ,  Y10S505/829 ,  Y10S977/933

摘要： A solid-state quantum computing structure includes a set of islands that Josephson junctions separate from a first superconducting bank. A d-wave superconductor is on one side of the Josephson junctions (either the islands' side or the bank's side), and an s-wave superconductor forms the other side of the Josephson junctions. The d-wave superconductor causes the ground state for the supercurrent at each junction to be doubly degenerate, with two supercurrent ground states having distinct magnetic moments. These quantum states of the supercurrents at the junctions create qubits for quantum computing. The quantum states can be uniformly initialized from the bank, and the crystal orientations of the islands relative to the bank influence the initial quantum state and tunneling probabilities between the ground states. A second bank, which a Josephson junction separates from the first bank, can be coupled to the islands through single electron transistors for selectably initializing one or more of the supercurrents in a different quantum state. Single electron transistors can also be between the islands to control entanglements while the quantum states evolve. After the quantum states have evolved to complete a calculation, grounding the islands, for example, through yet another set of single electron transistors, fixes the junctions in states having definite magnetic moments and facilitates measurement of the supercurrent when determining a result of the quantum computing.

摘要翻译： 固态量子计算结构包括约瑟夫逊结与第一超导体分离的一组岛。 d波超导体位于约瑟夫逊结（岛屿一侧或银行侧）的一侧，s波超导体形成约瑟夫逊结的另一侧。 d波超导体使得每个结的超级电流的基态为双重退化，两个超电流基态具有不同的磁矩。 在交汇处的超电流的这些量子态产生量子计算的量子位。 量子态可以从堤岸中均匀地初始化，并且岛相对于堤岸的晶体取向影响初始量子态和基态之间的隧穿概率。 约瑟夫逊结与第一组分离的第二组可以通过单电子晶体管耦合到岛，用于可选择地初始化不同量子态的一个或多个超电流。 单电子晶体管也可以在岛之间，以控制纠缠，而量子态则演变。 在量子态已经发展到完成计算之后，例如通过另一组单电子晶体管接地岛，将结点固定在具有确定磁矩的状态中，并且有助于在确定量子计算的结果时测量超级电流 。

公开(公告)号：US06818918B2

公开(公告)日：2004-11-16

申请号：US10008022

申请日：2001-11-05

申请人： Ju Gao ,  Jinglan Sun

发明人： Ju Gao ,  Jinglan Sun

IPC分类号： H01L3922

CPC分类号： C23C14/3492 ,  C23C14/087 ,  C23C14/3414 ,  C23C14/46 ,  H01L39/225

摘要： A Josephson junction includes first and second electrodes, each of which is formed of superconductive material. The first electrode has a first electrode face. A barrier of the junction extends from the first electrode to the second electrode. The barrier has a first barrier face opposing and adjoining the first electrode face. The barrier is formed of non-superconductive barrier material and superconductive barrier material. A concentration of the superconductive barrier material is greater than zero at the first barrier face, whereby the first barrier face is formed at least partially of the superconductive barrier material.

摘要翻译： 约瑟夫逊结包括第一和第二电极，每个电极由超导材料形成。 第一电极具有第一电极面。 结的屏障从第一电极延伸到第二电极。 阻挡层具有与第一电极面相对且邻接的第一阻挡面。 阻挡层由非超导阻挡材料和超导阻挡材料形成。 超导阻挡材料的浓度在第一阻挡面处大于零，由此第一阻挡面至少部分地由超导阻挡材料形成。

公开(公告)号：US06563311B2

公开(公告)日：2003-05-13

申请号：US09855817

申请日：2001-05-14

申请人： Alexandre M. Zagoskin

发明人： Alexandre M. Zagoskin

IPC分类号： H01L3922

CPC分类号： G06N99/002 ,  B82Y10/00 ,  H01L39/225 ,  Y10S505/829 ,  Y10S977/933

摘要： A solid-state quantum computing structure includes a d-wave superconductor in sets of islands that clean Josephson junctions separate from a first superconducting bank. The d-wave superconductor causes the ground state for the supercurrent at each junction to be doubly degenerate, with two supercurrent ground states having distinct magnetic moments. These quantum states of the supercurrents at the junctions create qubits for quantum computing. The quantum states can be uniformly initialized from the bank, and the crystal orientations of the islands relative to the bank influence the initial quantum state and tunneling probabilities between the ground states. A second bank, which a Josephson junction separates from the first bank, can be coupled to the islands through single electron transistors for selectably initializing one or more of the supercurrents in a different quantum state. Single electron transistors can also be used between the islands to control entanglements while the quantum states evolve. After the quantum states have evolved to complete a calculation, grounding the islands, for example, through yet another set of single electron transistors, fixes the junctions in states having definite magnetic moments and facilitates measurement of the supercurrent when determining a result of the quantum computing.

摘要翻译： 固态量子计算结构包括一组岛中的d波超导体，其清洁与第一超导体分离的约瑟夫森结。 d波超导体使得每个结的超级电流的基态为双重退化，两个超电流基态具有不同的磁矩。 在交汇处的超电流的这些量子态产生量子计算的量子位。 量子态可以从堤岸中均匀地初始化，并且岛相对于堤岸的晶体取向影响初始量子态和基态之间的隧穿概率。 约瑟夫逊结与第一组分离的第二组可以通过单电子晶体管耦合到岛，用于可选择地初始化不同量子态的一个或多个超电流。 也可以在岛之间使用单电子晶体管来控制纠缠，同时量子态发展。 在量子态已经发展到完成计算之后，例如通过另一组单电子晶体管接地岛，将结点固定在具有确定磁矩的状态中，并且有助于在确定量子计算的结果时测量超级电流 。