利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

707 条记录 (耗时 0.024 秒)

    SYSTEM AND METHOD FOR DETERMINING A MODAL PROPERTY OF A QUANTUM STATE USING TWO-TIME CORRELATION MEASUREMENTS
    3.
    发明公开
    SYSTEM AND METHOD FOR DETERMINING A MODAL PROPERTY OF A QUANTUM STATE USING TWO-TIME CORRELATION MEASUREMENTS 审中-公开

    公开(公告)号：US20240175760A1

    公开(公告)日：2024-05-30

    申请号：US17994054

    申请日：2022-11-25

    申请人： XANADU QUANTUM TECHNOLOGIES INC.

    发明人： Jean-Etienne TREMBLAY

    IPC分类号： G01J9/02

    CPC分类号： G01J9/02

    摘要： There is described a system for determining a modal property of a quantum state. The system generally has a quantum light source generating an optical pulse having a given frequency, a pulse time duration and a quantum state with a modal property; a local pulse generator having: a laser source generating a local optical signal having a frequency associated to the given frequency; an optical modulator modulating the local optical signal; and an arbitrary wave generator supplying electrical waveforms to the optical modulator for said modulating, said modulating including forming local optical pulses from the local optical signal, the local optical pulses being distributed within the pulse time duration; and a homodyne detector optically coupled to the quantum light source and to the local pulse generator for performing two-time correlation measurements being indicative of the modal property of the quantum state of the given optical pulse.

    METHOD AND SYSTEM FOR EXPANDING THE DYNAMIC RANGE OF MACH-ZEHNDER SENSOR BASED ON THE CALCULATION OF OPTICAL LENGTH
    5.
    发明公开
    METHOD AND SYSTEM FOR EXPANDING THE DYNAMIC RANGE OF MACH-ZEHNDER SENSOR BASED ON THE CALCULATION OF OPTICAL LENGTH 审中-公开

    公开(公告)号：US20240019310A1

    公开(公告)日：2024-01-18

    申请号：US17935118

    申请日：2022-09-25

    申请人： Shanghai Haina Data Technology Company Ltd.

    发明人： Rui YIN ,  Qingjie HUANG ,  Zhaoqi LI

    IPC分类号： G01J9/02

    CPC分类号： G01J9/02 ,  G01J2009/0288

    摘要： A method and system are for expanding a measuring range of a Mach-Zehnder sensor based on the calculation of optical length; the method includes: (1) performing calibration according to a known parameter to complete calibration of a Mach-Zehnder pressure sensor; and (2) for an unknown parameter, testing the unknown parameter first using the Mach-Zehnder sensor to acquire discrete data; processing the discrete data using a peak and valley synthesis algorithm to restore a diffraction order m; calculating an optical length value of the unknown parameter; and restoring, according to a calibrated relationship curve between the optical length and the parameter, the unknown parameter, thus expanding the measuring range of the Mach-Zehnder sensor to enable the Mach-Zehnder sensor to break through the limitation of the FSR and the spectral width of a light source. The measuring range can be theoretically expanded to infinitely great.

    APPARATUSES AND METHODS FOR EXAMINING THE MOVEMENT OF CONSTITUENTS WITHIN TISSUE CELLS
    6.
    发明公开
    APPARATUSES AND METHODS FOR EXAMINING THE MOVEMENT OF CONSTITUENTS WITHIN TISSUE CELLS 审中-公开

    公开(公告)号：US20240011903A1

    公开(公告)日：2024-01-11

    申请号：US18036360

    申请日：2021-11-10

    申请人： PURDUE RESEARCH FOUNDATION

    发明人： David D. NOLTE ,  Kwan JEONG ,  Maria Josef LOPERA ,  John J. TUREK

    IPC分类号： G01N21/47 ,  G01J3/02 ,  G01J9/02

    CPC分类号： G01N21/474 ,  G01J3/0208 ,  G01J3/021 ,  G01J9/02 ,  G01N2015/1006

    摘要： Apparatuses and methods for investigating the inside of a tissue cell are disclosed. Embodiments include diffusely scattering light off a target sample, producing two crossing beams from the scattered light, and using a camera to create an image from the light. Some embodiments utilize a Fourier lens and a Fresnel biprism, and optionally include a long-coherence light source, a delay plate (which can be a polarization rotator or an optical flat), and/or a beam expander. Still further embodiments utilize a diffraction grating, a spatial filter (which may include two differently sized apertures), and a Fourier lens, and optionally include differently sized apertures in the spatial filter. Some embodiments include a transparent support and illuminating the target at an oblique angle through the transparent support. Still further embodiments utilize a low-coherence light source and/or immobilizing the sample tissue using surface bonding chemistry.

    METHOD FOR MEASURING RELATIVE DELAYS BETWEEN OPTICAL PROPAGATION CHANNELS IN PULSED OPERATION
    10.
    发明申请
    METHOD FOR MEASURING RELATIVE DELAYS BETWEEN OPTICAL PROPAGATION CHANNELS IN PULSED OPERATION 审中-公开

    公开(公告)号：US20180364106A1

    公开(公告)日：2018-12-20

    申请号：US15780182

    申请日：2016-11-30

    申请人： THALES

    发明人： Jérome BOURDERIONNET ,  Arnaud BRIGNON ,  Marie ANTIER-MURGEY

    IPC分类号： G01J9/02 ,  G01J11/00 ,  G04F13/02 ,  H01S3/00

    CPC分类号： G01J9/02 ,  G01J11/00 ,  G04F13/026 ,  H01S3/0057 ,  H01S3/2308

    摘要： A method for measuring the delay between N pulses having a duration less than 100 picoseconds comprises the steps: collimated emission of the pulses having the same repetition frequency, emission of a reference pulse having the same repetition frequency capable of producing interference fringes with each of the pulses, for each of the pulses, detection, by a detector, of the coherent sum of this pulse with the reference pulse, this sum producing the interference fringes, the fringes originating from each of the pulses being distinguishable from one another. The reference pulse is emitted with an adjustable delay, and the method further comprises: for each delay, simultaneous measurement for the pulses of N contrasts of the interference fringes, for each of the pulses, a delay value between this pulse and the reference pulse is determined by the delay corresponding to the maximum contrast.