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公开(公告)号：US20170052235A1
公开(公告)日：2017-02-23
申请号：US15307088
申请日：2014-06-17
IPC分类号： G01R33/34
CPC分类号： G01R33/34076 , G01R33/34007 , G01R33/34023 , G01R33/3403
摘要： In some aspects, a resonator device for magnetic resonance applications is described. In some examples, the resonator device includes a resonator body that includes a periodic arrangement of cells about a central interior region. Each cell includes a dielectric substrate and a conductor disposed on the dielectric substrate. The periodic arrangement of the cells defines a periodic network of inductive and capacitive elements adapted to produce a magnetic field in the central interior region. The cells can be arranged according to various topologies that form various capacitive and inductive schemes. In some implementations, a dielectric substrate and thin superconductor are used, and the resonator device exhibits a high quality factor (Q) and low losses.
摘要翻译： 在一些方面，描述了用于磁共振应用的谐振器装置。 在一些示例中，谐振器装置包括谐振器主体，其包括围绕中心内部区域的单元的周期性布置。 每个单元包括电介质基板和布置在电介质基板上的导体。 单元的周期性布置限定适于在中心内部区域中产生磁场的感应和电容元件的周期性网络。 可以根据形成各种电容和电感方案的各种拓扑来布置单元。 在一些实施方案中，使用电介质基板和薄超导体，并且谐振器装置表现出高品质因数（Q）和低损耗。
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公开(公告)号：US20160061915A1
公开(公告)日：2016-03-03
申请号：US14888180
申请日：2014-01-31
发明人： Grum Teklemariam , David G. Cory
CPC分类号： G01R33/282 , G01N24/08 , G01N24/10 , G01R33/30 , G01R33/3804 , G01R33/3856 , G01R33/44 , G01R33/50 , G01R33/56 , G01R33/60
摘要： In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A magnetic resonance imaging (MRI) system includes a cavity and a resonator. The cavity is adapted to interact with a spin ensemble in an imaging subject in a static magnetic field. The resonator is adapted to generate an interaction between the cavity and the spin ensemble that increases polarization of the spin ensemble. In some implementations, the spin ensemble achieves a polarization that is higher than its thermal equilibrium polarization.
摘要翻译： 在一些方面，使用基于腔的技术可以增加旋转集合的极化。 磁共振成像（MRI）系统包括腔和谐振器。 空腔适于在静态磁场中与成像对象中的旋转整体相互作用。 谐振器适于产生腔和旋转组合之间的相互作用，其增加旋转集合的极化。 在一些实施方案中，旋转集合实现了高于其热平衡极化的极化。
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公开(公告)号：US11199512B2
公开(公告)日：2021-12-14
申请号：US16751740
申请日：2020-01-24
发明人： Dusan Sarenac , Connor Kapahi , Dmitry A. Pushin , David G. Cory
摘要： In a general aspect, a collimator system is described. In some aspects, a neutron beam collimation method includes receiving a neutron beam from a neutron source; polarizing the neutron beam using a polarizer, and obtaining a collimated neutron beam from the polarized neutron beam. The neutron beam generated by the neutron source has a first beam divergence and includes a plurality of neutrons. The collimated neutron beam has a second beam divergence that is less than the first beam divergence. Obtaining the collimated neutron beam includes mapping transverse momentum of each respective neutron, of the plurality of neutrons, onto a polarization degree of freedom of the respective neutron by applying a sequence of phase shift gradients to the polarized neutron beam, and after applying the sequence of phase shift gradients, passing the polarized neutron beam through an analyzer.
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公开(公告)号：US20210278488A1
公开(公告)日：2021-09-09
申请号：US17329968
申请日：2021-05-25
IPC分类号： G01R33/345 , G01R33/36
摘要： In some aspects, a resonator device includes a dielectric substrate, a ground plane on a first side of the substrate, and conductors on a second, opposite side of the substrate. The conductors include first and second resonators and two baluns. Each balun includes a feed, a first branch and a second branch. The feed is connected to the first and second branches, and the first and second branches are capacitively coupled to the respective first and second resonators. The first branch includes a delay line configured to produce a phase shift relative to the second branch. The resonator device includes a sample region configured to support a magnetic resonance sample between the first and second resonators.
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公开(公告)号：US10924127B2
公开(公告)日：2021-02-16
申请号：US16809944
申请日：2020-03-05
IPC分类号： H03L7/26 , G06N10/00 , G05B17/02 , G11C11/44 , G06F13/40 , G06F13/36 , G06F15/82 , B82Y15/00
摘要： In some aspects, a control system interacts with a quantum system. In some instances, the quantum system includes qubits that respond to a control signal generated by the control system, and the control system is configured to generate the control signal in response to an input signal. A control sequence (which may include, for example, a sequence of values for the input signal) can be generated by a computing system based on a target operation to be applied to the qubits. The control sequence can be generated based on the target operation, a quantum system model, a distortion model and possibly other information. The quantum system model represents the quantum system and includes a control parameter representing the control signal. The distortion model represents a nonlinear relationship between the control signal and the input signal. The control sequence is applied to the quantum system by operation of the control system.
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公开(公告)号：US10587277B2
公开(公告)日：2020-03-10
申请号：US15328951
申请日：2015-09-23
IPC分类号： H03L7/26 , G06N10/00 , G05B17/02 , G06F15/82 , B82Y15/00 , G11C11/44 , G06F13/40 , G06F13/36
摘要： In some aspects, a control system interacts with a quantum system. In some instances, the quantum system includes qubits that respond to a control signal generated by the control system, and the control system is configured to generate the control signal in response to an input signal. A control sequence (which may include, for example, a sequence of values for the input signal) can be generated by a computing system based on a target operation to be applied to the qubits. The control sequence can be generated based on the target operation, a quantum system model, a distortion model and possibly other information. The quantum system model represents the quantum system and includes a control parameter representing the control signal. The distortion model represents a nonlinear relationship between the control signal and the input signal. The control sequence is applied to the quantum system by operation of the control system.
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公开(公告)号：US20160109540A1
公开(公告)日：2016-04-21
申请号：US14787575
申请日：2014-01-31
IPC分类号： G01R33/28 , G01R33/385 , G01R33/50 , G01R33/56
CPC分类号： G01R33/282 , G01N24/08 , G01N24/10 , G01R33/30 , G01R33/3804 , G01R33/3856 , G01R33/44 , G01R33/50 , G01R33/56 , G01R33/60
摘要： In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A resonator applies drive field to a spin ensemble in a static magnetic field. The drive field couples the spin ensemble with a cavity, and the coupling increases the polarization of the spin ensemble. In some cases, the cavity is detuned from the spin- resonance frequency, and the Rabi frequency associated with the drive field can be matched to the cavity detuning.
摘要翻译： 在一些方面，使用基于腔的技术可以增加旋转集合的极化。 谐振器在静态磁场中将驱动场施加到旋转组合。 驱动场将旋转组合与空腔耦合，并且耦合增加了旋转组合的极化。 在一些情况下，空腔与自旋共振频率失谐，与驱动场相关的Rabi频率可以与腔体失谐相匹配。
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公开(公告)号：US20160077177A1
公开(公告)日：2016-03-17
申请号：US14787624
申请日：2014-01-31
发明人： Grum Teklemariam , David G. Cory
CPC分类号： G01R33/282 , G01N24/08 , G01N24/10 , G01R33/30 , G01R33/3804 , G01R33/3856 , G01R33/44 , G01R33/50 , G01R33/56 , G01R33/60
摘要： In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A resonator applies a drive field to a spin ensemble in a sample in a static magnetic field. The drive field couples the spin ensemble with a cavity, and the coupling increases the polarization of the spin ensemble. In some cases, the sample is thermally insulated from the cavity, for example, to maintain the sample at a higher temperature than the cavity. In some implementations, the spin ensemble achieves a polarization that is higher than its thermal equilibrium polarization.
摘要翻译： 在一些方面，使用基于腔的技术可以增加旋转集合的极化。 谐振器将静态磁场中的驱动场施加到样品中的旋转组合。 驱动场将旋转组合与空腔耦合，并且耦合增加了旋转组合的极化。 在一些情况下，样品与空腔热绝缘，例如，以将样品保持在比空腔更高的温度。 在一些实施方案中，旋转集合实现了高于其热平衡极化的极化。
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公开(公告)号：US20160077168A1
公开(公告)日：2016-03-17
申请号：US14787665
申请日：2014-05-02
发明人： Grum Teklemariam , David G. Cory
CPC分类号： G01R33/282 , G01N24/08 , G01R33/31 , G01R33/46
摘要： In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A sample contains a first spin ensemble and a second spin ensemble. A drive field couples the first spin ensemble with a cavity, and the coupling increases the polarization of the first spin ensemble. Polarization is transferred from the first spin ensemble to the second spin ensemble. In some examples, the polarization is transferred from a solvent or an abundant species to a solute or a dilute species in the sample.
摘要翻译： 在一些方面，使用基于腔的技术可以增加旋转集合的极化。 样本包含第一旋转集合和第二旋转组合。 驱动场将第一旋转组合与空腔相耦合，并且耦合增加了第一旋转组合的极化。 极化从第一旋转组合转移到第二旋转组合。 在一些实例中，极化从溶剂或丰富物质转移到样品中的溶质或稀释物质。
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公开(公告)号：US20210141037A1
公开(公告)日：2021-05-13
申请号：US17122120
申请日：2020-12-15
发明人： Troy W. Borneman , David G. Cory
IPC分类号： G01R33/36
摘要： A method is presented for controlling a spin system in an external magnetic field. The method includes sending a first pulse to a resonator over a first period. The resonator generates a magnetic field in response to receiving the first pulse. Moreover, the resonator applies the magnetic field to the spin system and the first pulse maintains the magnetic field in a transient state during the first period. The method also includes sending a second pulse to the resonator over a second period immediately following the first period. The resonator alters a magnitude of the magnetic field to zero in response to receiving the second pulse. Other methods are presented for controlling a spin system in an external magnetic field, including systems for controlling a spin system in an external field.
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