公开(公告)号：US20100085678A1

公开(公告)日：2010-04-08

申请号：US12524911

申请日：2008-02-01

申请人： John Henry Jefferson ,  Michael Fearn ,  George Giavaras

发明人： John Henry Jefferson ,  Michael Fearn ,  George Giavaras

IPC分类号： H05F3/00 ,  H01L29/66

CPC分类号： H01L29/66984 ,  B82Y10/00 ,  G06N99/002 ,  H01L29/0665 ,  H01L29/0673 ,  H01L29/1606

摘要： The present invention relates to the formation of electron spin EPR pairs and manipulation of such entangled electrons. The invention comprises a static quantum dot located part way along a quantum wire with means for adjusting the confining potential of the quantum dot. The quantum wire may for instance be formed by gate electrode (4, 6) with the quantum dot formed by a further gate electrode (8). The invention also comprises means for generating a electrostatic wave propagating along the wire, such as a surface acoustic wave transducer (10). In use a pair of electrons may be loaded into the static quantum dot and allowed to relax to a singlet ground state, in which the electrons are spin entangled. The propagating electrostatic wave acts as a series of quantum dots moving along the quantum wire. The confining potential of the static quantum dot is adjusted in time with arrival of a moving quantum dot so that one of the spin entangled electrons will tunnel to the moving quantum dot with preserved entanglement. The same process can be used to separately eject the remaining electron. The process can also be applied in reverse transport electrons from a moving quantum dot into a static dot.

摘要翻译： 本发明涉及电子自旋EPR对的形成和这种纠缠电子的操纵。 本发明包括位于量子线的一部分的静态量子点，其具有用于调整量子点的限制电位的装置。 量子线可以例如由栅电极（4,6）形成，其中量子点由另一个栅电极（8）形成。 本发明还包括用于产生沿导线传播的静电波的装置，例如表面声波换能器（10）。 在使用中，可以将一对电子加载到静态量子点中并使其弛豫至单线态，其中电子自旋缠结。 传播的静电波作为沿着量子线移动的一系列量子点。 静态量子点的约束电位随着移动量子点的到达而及时调整，使得自旋缠结电子之一将以保持纠缠的方式隧穿到移动量子点。 可以使用相同的方法分别喷射剩余的电子。 该方法也可以应用于将电子从移动量子点反向传输到静态点中。

公开(公告)号：US08254079B2

公开(公告)日：2012-08-28

申请号：US12524911

申请日：2008-02-01

申请人： John Henry Jefferson ,  Michael Fearn ,  George Giavaras

发明人： John Henry Jefferson ,  Michael Fearn ,  George Giavaras

IPC分类号： G03G15/056

CPC分类号： H01L29/66984 ,  B82Y10/00 ,  G06N99/002 ,  H01L29/0665 ,  H01L29/0673 ,  H01L29/1606

摘要： The present invention relates to the formation of electron spin EPR pairs and manipulation of such entangled electrons. The invention comprises a static quantum dot located part way along a quantum wire with means for adjusting the confining potential of the quantum dot. The quantum wire may for instance be formed by gate electrode (4, 6) with the quantum dot formed by a further gate electrode (8). The invention also comprises means for generating a electrostatic wave propagating along the wire, such as a surface acoustic wave transducer (10). In use a pair of electrons may be loaded into the static quantum dot and allowed to relax to a singlet ground state, in which the electrons are spin entangled. The propagating electrostatic wave acts as a series of quantum dots moving along the quantum wire. The confining potential of the static quantum dot is adjusted in time with arrival of a moving quantum dot so that one of the spin entangled electrons will tunnel to the moving quantum dot with preserved entanglement. The same process can be used to separately eject the remaining electron. The process can also be applied in reverse transport electrons from a moving quantum dot into a static dot.

摘要翻译： 本发明涉及电子自旋EPR对的形成和这种纠缠电子的操纵。 本发明包括位于量子线的一部分的静态量子点，其具有用于调整量子点的限制电位的装置。 量子线可以例如由栅电极（4,6）形成，其中量子点由另一个栅电极（8）形成。 本发明还包括用于产生沿导线传播的静电波的装置，例如表面声波换能器（10）。 在使用中，可以将一对电子加载到静态量子点中并使其弛豫至单线态，其中电子自旋缠结。 传播的静电波作为沿着量子线移动的一系列量子点。 静态量子点的约束电位随着移动量子点的到达而及时调整，使得自旋缠结电子之一将以保持纠缠的方式隧穿到移动量子点。 可以使用相同的方法分别喷射剩余的电子。 该方法也可以应用于将电子从移动量子点反向传输到静态点中。

公开(公告)号：US20160059960A1

公开(公告)日：2016-03-03

申请号：US14779915

申请日：2014-01-23

申请人： Michael FEARN ,  Brian FEARN

发明人： Michael FEARN ,  Brian FEARN

IPC分类号： B64C27/54 ,  B64D47/08 ,  B64C27/06

CPC分类号： B64C27/54 ,  B64C27/022 ,  B64C27/06 ,  B64C27/43 ,  B64D47/08

摘要： A rotorcraft rotor head has: (i) two or more rotor blades attached to rotate about a rotor axis, and pivot through a flapping and/or teetering hinge, and having a pitch angle; (ii) pitch angle changing means for collectively changing said pitch angle; (iii) centrifugal pitch stop mechanism having an activation point and comprising one or more centrifugal plates; and (iv) control means for providing a control input to said pitch angle changing means; wherein said centrifugal pitch stop mechanism is configured to attain an activated state and to interact with said pitch angle changing means; wherein said activated state is attained when the rotational speed of said rotor blades is greater than said activation point and when a control input is provided by said control means; and wherein said activation point is less than the minimum rotational speed of the rotor blades that is required for flying the rotorcraft.

摘要翻译： 旋翼航空转子头具有：（i）两个或更多个转子叶片，其附接成围绕转子轴线旋转，并且枢转穿过摇动和/或移动铰链并具有俯仰角; （ii）用于共同地改变所述桨距角的俯仰角改变装置; （iii）具有活化点并且包括一个或多个离心板的离心节流停止机构; 和（iv）用于向所述俯仰角改变装置提供控制输入的控制装置; 其中所述离心节流停止机构构造成达到激活状态并与所述桨距角改变装置相互作用; 其中当所述转子叶片的旋转速度大于所述激活点时以及当由所述控制装置提供控制输入时，达到所述激活状态; 并且其中所述激活点小于所述旋翼飞行器所需的转子叶片的最小转速。