Mach Zehnder Interferometer for Magic State Distillation

    公开(公告)号:US20220066279A1

    公开(公告)日:2022-03-03

    申请号:US17008812

    申请日:2020-09-01

    Abstract: A Mach-Zehnder interferometer (MZI) is provided to receive a coherent input photon in an initial pointer state along an emission direction for producing a continuous variable “faux qubit” in a magic state. The MZI apparatus includes first and second ports, first and second beam-splitters, first and second mirrors, and a modular interaction operator. The emitter produces an input coherent photon in an initial pointer state along an emission direction. The first and second ports are respectively disposed parallel and perpendicular to the emission direction. The first port has a detector. The first beam-splitter is disposed collinearly with the emission direction. The second beam-splitter is disposed between the first and second ports in parallel to and offset from the emission direction. The input photon reflects from the mirrors. Each beam-splitter either passes through or else reflects the input photon.
    The first mirror is disposed from the first and second beam-splitters respectively perpendicular and parallel to the emission direction. The second mirror is disposed from the first and second beam-splitters respectively collinearly with and perpendicular to the emission direction. The modular interaction operator is disposed between the first mirror and the second beam-splitter for measuring interaction therebetween to thereby generate a post-selected magic state photon. Further embodiments include an actuator that translates the first mirror diagonally to and from the beam-splitters to set coupling strength. Additional embodiments enable a phase angle shift between the first beam-splitter and the first mirror.

    Chiral slab thickness measurement using weak value amplification
    12.
    发明授权
    Chiral slab thickness measurement using weak value amplification 有权
    使用弱值扩增的手性板厚测量

    公开(公告)号:US08902436B1

    公开(公告)日:2014-12-02

    申请号:US13134432

    申请日:2011-06-27

    Applicant: Allen D. Parks

    Inventor: Allen D. Parks

    CPC classification number: G01B1/00 G01B11/0641 G01N21/21 G01N2021/0106

    Abstract: A method is provided for determining a thickness L of a chiral slab that refracts incident linearly polarized light into right (+) and left (−) circularly polarized beams. The method includes disposing the slab in an achiral medium, determining values of translation coefficients γ±, determining values for refraction angle differences (θ+−θ−), selecting pre- and post selection states |ψi and |ψj, projecting an emitted light beam through said achiral medium into the chiral slab a small established angle of incidence θ0, varying slab egress phase angles β±, determining said pointer mean value x, calculating weak value Aw, and calculating the thickness as L = 〈 x 〉 Re ⁢ ⁢ A w . The achiral medium has an established index of refraction n0. The translation coefficients γ± establish refraction translation differences (γ+−γ−). The pre-selection state |ψi establishes pre-selection alignment angle to satisfy Φ=π/4. The post-selection state |ψj establishes post-selection alignment angle to satisfy χ=Φ−ε and 0 0 or else a minimum for (γ+−γ−)

    Abstract translation: 提供了一种用于确定将入射的线偏振光折射成右(+)和左( - )圆偏振光束的手征板的厚度L的方法。 该方法包括将平板布置在非手性介质中,确定平移系数γ±的值,确定折射角差值(&Theta; + - &Thetas ;-),选择前后选择状态|ψi和|ψj, 发射光束通过所述非手性介质进入手性板中小的入射角度; 0,变化的板坯出口相位角&bgr;±,确定所述指针平均值x,计算弱值Aw,并计算厚度为L =⟨ x⟩Re ud A w。 非手性介质具有确定的折射率n0。 平移系数γ±建立折射平移差(γ+-γ-)。 预选择状态ψi建立预选择对准角以满足Φ=&pgr; / 4。 选择后状态ψj建立后选择对齐角,以满足χ=Φ-&egr; 和0 <&egr; << 1。 调整板坯出口相位角&bgr。±,直到指针平均值x达到(γ+-γ - )> 0的最大值之一,否则为(γ+-γ-)<0的最小值。 在各种示例性实施例中,弱值近似为A w≈γ+-γ-+ 2·ü卜∈γ-2·∞·∞·≈≈γ+-γ- 。

    Optical dynamic non-locality induction bit
    13.
    发明授权
    Optical dynamic non-locality induction bit 有权
    光动态非位置感应位

    公开(公告)号:US08619261B2

    公开(公告)日:2013-12-31

    申请号:US13199507

    申请日:2011-08-24

    CPC classification number: G06N99/002 B82Y10/00 G01B2290/55

    Abstract: A quantum dynamical non-locality device is provided for establishing a photon traveling along a path in a binary state. The device includes twin Mach-Zehnder interferometer (MZI), a shutter and a detector. The twin MZI includes first and second right-isosceles triangle prisms, corresponding first and second trombone mirrors, and corresponding first and second spacers. The prisms join at a beam-splitter interface. The mirrors reflect the photon by an offset substantially perpendicular to photon's travel direction. The spacers are respectively disposed between their respective prisms and mirrors to produce corresponding spatial gaps. The path through the prisms includes traversing spacers and gaps. The detector detects a quantum state of the photon after passing the prisms and the mirrors. The shutter switches to one of disposed within and removed therefrom the first gap. The shutter shifts said quantum state of the photon.

    Abstract translation: 提供量子动力学非位置装置,用于建立沿着二进制状态的路径行进的光子。 该装置包括双马赫 - 曾德尔干涉仪(MZI),快门和探测器。 双MZI包括第一和第二右等腰三角棱镜,对应的第一和第二长号反射镜以及对应的第一和第二间隔件。 棱镜连接在分束器接口。 反射镜通过基本上垂直于光子行进方向的偏移来反射光子。 间隔件分别设置在它们各自的棱镜和反射镜之间以产生相应的空间间隙。 通过棱镜的路径包括穿过间隔物和间隙。 检测器在通过棱镜和反射镜之后检测光子的量子态。 快门切换到设置在第一间隙内并从其移除的第一间隙之一。 快门移动光子的量子态。

    Measurement of small accelerations by optical weak value amplification
    14.
    发明授权
    Measurement of small accelerations by optical weak value amplification 失效
    通过光学弱值放大测量小的加速度

    公开(公告)号:US08411278B2

    公开(公告)日:2013-04-02

    申请号:US13136902

    申请日:2011-07-26

    CPC classification number: G01P15/093 G01B2290/55

    Abstract: An accelerometer instrument is provided for measuring acceleration. The instrument includes a laser, a Mach-Zender interferometer (MZI), a mechanical spring, a detector, a camera, and an analyzer. The laser emits a coherent light beam of photons. The MZI includes first and second beam-splitters along with first and second mirrors. The first mirror has an established mass m and connects to the spring for vibrating substantially perpendicular to its reflection plane. The mechanical spring has an established spring constant k. The MZI has an established weak measurement Nw based on a known offset ε for the beam-splitters. The detector detects the beam beyond the second beam-splitter. The camera provides a pointer measurement shift δq of the photons. The camera is disposed after the detector. The analyzer determines the acceleration α based on a = ( k mN w ) ⁢ δ ⁢ ⁢ q .

    Abstract translation: 提供加速度计仪器用于测量加速度。 该仪器包括激光,Mach-Zender干涉仪(MZI),机械弹簧,检测器,相机和分析仪。 激光发射光子的相干光束。 MZI包括第一和第二分束器以及第一和第二反射镜。 第一镜具有确定的质量m并且连接到弹簧以基本上垂直于其反射平面振动。 机械弹簧具有建立的弹簧常数k。 基于已知的偏移量,MZI具有成熟的弱测量Nw; 用于分束器。 检测器检测超过第二分束器的光束。 相机提供光子的指针测量位移δq。 相机放置在检测器之后。 分析器基于a =(k mN w)δ?q q来确定加速度α。

    Method and apparatus for counting photons in a single-mode, coherent
microwave field
    15.
    发明授权
    Method and apparatus for counting photons in a single-mode, coherent microwave field 失效
    用于在单模,相干微波场中计数光子的方法和装置

    公开(公告)号:US5506415A

    公开(公告)日:1996-04-09

    申请号:US360105

    申请日:1994-12-20

    CPC classification number: G01N22/00 G01J5/36

    Abstract: A method and apparatus are provided for determining the number of photons in a single-mode, coherent microwave field. A plurality of Rydberg atoms are generated whereby each Rydberg atom has an energy state defined by a plurality of energy levels. The Rydberg atoms are passed through the microwave field one at a time. An exit state of the microwave field in terms of phase is measured as each Rydberg atom exits the microwave field. An exit energy level of each Rydberg atom exiting the microwave field is also detected. The number of Rydberg atoms exiting the microwave field in each of four measurement classes defined by the exit state and exit energy level are counted.

    Abstract translation: 提供了一种用于确定单模,相干微波场中的光子数量的方法和装置。 产生多个Rydberg原子,由此每个Rydberg原子具有由多个能级定义的能量状态。 Rydberg原子一次通过微波场。 当Rydberg原子离开微波场时,测量微波场的相位退出状态。 还检测出离开微波场的每个Rydberg原子的出射能级。 对由出口状态和退出能级定义的四个测量类别中的每一个中离开微波场的Rydberg原子数进行计数。

    Toroidal computer memory for serial and parallel processors
    16.
    发明授权
    Toroidal computer memory for serial and parallel processors 失效
    用于串行和并行处理器的环形计算机存储器

    公开(公告)号:US5278966A

    公开(公告)日:1994-01-11

    申请号:US546595

    申请日:1990-06-29

    CPC classification number: G06F12/0207

    Abstract: The toroidal computer memory system utilizes toroidal memory paths in its chitecture to enable memory locations along those paths to be obtained in a single access, as compared to multiple accesses typically required by conventional linear computer memory. The storage/retrievable media is designed to replicate paths on the surface of a torus. By defining certain parameters and the mathematical properties of these memory paths in the electronics of a controller, points on the memory paths can be accessed from the storage/retrieval media more efficiently than conventional computer memory.

    Abstract translation: 环形计算机存储器系统在其架构中利用环形存储器路径,以便与常规线性计算机存储器通常需要的多个访问相比,在单个访问中获得沿着这些路径的存储器位置。 存储/可检索介质被设计为复制圆环表面上的路径。 通过在控制器的电子设备中定义某些参数和这些存储器路径的数学特性,可以比常规计算机存储器更有效地从存储/检索介质访问存储器路径上的点。

    Magnetic Field Detection Using Faraday Effect

    公开(公告)号:US20120313634A1

    公开(公告)日:2012-12-13

    申请号:US13134486

    申请日:2011-06-06

    Applicant: Allen D. Parks

    Inventor: Allen D. Parks

    CPC classification number: G01R33/0322

    Abstract: A magnetometer is provided for detecting a magnetic field of strength B using the Faraday effect. The magnetometer includes a photon emitter, a first polarizer, a prism, a second polarizer, a detector and an analyzer. The emitter projects an emitted light beam substantially parallel to the magnetic field and having wavelength λ. The prism has an interface surface and is composed of a Faraday medium having Verdet value V. The emitted light beam passes through the first polarizer and then the prism, exiting from the interface surface making an incident angle θ0 to normal of the surface and then refracting into a secondary medium as first and second circularly polarized light beams that are separated by a small angular divergence δ. These polarized light beams have average refraction angle θ to the normal and pass through a post-selection polarizer before the detector measures a weak value Aw of a photon having “which path” operator  associated with the polarized light beams. The magnetic field strength is determined as B ≈ - 2  ɛ   A w  π   n 0  cos   θ V   λsin   θ 0 . The parameters include n0 as index of refraction of the secondary medium, and ε as amplification factor. The pointer rotation angle Aw can be expressed as A w = ( θ + - θ - )  cos   ɛ + [ ( θ + + θ - ) - 2  θ 0 ]  sin   ɛ 2   sin   ɛ in which θ+ and θ− are respectively right- and left-polarized refraction angles with the average refraction angle such that θ = 1 2  ( θ + + θ - ) . The pointer rotation angle Aw can be approximated as Aw≈δ/2ε when 0

    Mach Zehnder interferometer for magic state distillation

    公开(公告)号:US11886092B2

    公开(公告)日:2024-01-30

    申请号:US17008812

    申请日:2020-09-01

    CPC classification number: G02F1/225 G01B9/02 G02F1/212

    Abstract: A Mach-Zehnder interferometer (MZI) is provided to receive a coherent input photon in an initial pointer state for producing a continuously variable “faux qubit” in a magic state. The MZI apparatus includes first and second ports, first and second beam-splitters, first and second mirrors, and a modular interaction operator. The emitter produces an input coherent photon in an initial pointer state along an emission direction. The first and second ports are respectively disposed parallel and perpendicular to the emission direction. The first and second beam-splitters are disposed respectively collinearly with the emission direction and between the first and second ports parallel to and offset from the emission direction. The first and second mirrors are disposed respectively offset from and collinearly with the emission direction. The modular interaction operator is disposed between the first mirror and the second beam-splitter for measuring interaction therebetween to generate a post-selected magic state photon.

    M-dimensional computer memory with m-1 dimensional hyperplane access
    19.
    发明授权
    M-dimensional computer memory with m-1 dimensional hyperplane access 失效
    具有m-1维超平面访问的M维计算机存储器

    公开(公告)号:US5247630A

    公开(公告)日:1993-09-21

    申请号:US551103

    申请日:1990-07-09

    CPC classification number: G06F12/0207

    Abstract: An m-dimensional memory with m-1 dimensional hyperplane access. Random acs memory (RAM) circuits are arranged in a plurality of groups for storing data words corresponding to vertices of an m-dimensional lattice. Each vertex of the lattice is defined by an m-tuple. The minimum number of RAM circuits required to realize the memory architecture of the present invention is based upon the size of the lattice and the distribution of the data words in memory is based upon the m-tuples used to define the lattice.

    Abstract translation: 具有m-1维超平面访问的m维记忆。 随机存取存储器(RAM)电路被布置在用于存储对应于m维格子的顶点的数据字的多个组中。 网格的每个顶点由m元组定义。 实现本发明的存储器架构所需的RAM电路的最小数目是基于网格的大小,并且存储器中的数据字的分布是基于用于定义网格的m元组。

    Method for restructuring a database using a relational database scheme
derived by selecting subscheme joins to avoid cycles
    20.
    发明授权
    Method for restructuring a database using a relational database scheme derived by selecting subscheme joins to avoid cycles 失效
    使用通过选择子模式连接导出的关系数据库方案来重构数据库的方法,以避免循环

    公开(公告)号:US5222233A

    公开(公告)日:1993-06-22

    申请号:US551104

    申请日:1990-07-09

    Applicant: Allen D. Parks

    Inventor: Allen D. Parks

    CPC classification number: G06F17/30595 Y10S707/954 Y10S707/99943

    Abstract: A method for relational database scheme design with the aid of a digital puter for a database having attributes A.sub.i, i=1 to n and relational schemes R.sub.j, j=1 to m. Each relational scheme R.sub.j is a non-empty subset of the attributes A.sub.i. The method detects any scheme that is non-acyclic in a simple manner that is easily adapted to a digital computer environment. The resulting relational database scheme design is thereby prevented from being non-acyclic.

    Abstract translation: 一种借助数字计算机为具有属性Ai,i = 1至n和关系方案Rj,j = 1至m的数据库进行关系数据库方案设计的方法。 每个关系方案Rj是属性Ai的非空子集。 该方法以易于适应于数字计算机环境的简单方式检测非非循环的任何方案。 从而防止了所产生的关系数据库方案设计成非循环。

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