公开(公告)号：US11810686B2

公开(公告)日：2023-11-07

申请号：US17391194

申请日：2021-08-02

Applicant: ColdQuanta, Inc.

Inventor： Dana Zachary Anderson ,  Clifton Leon Anderson

IPC: G21K1/00 ,  G01C19/58 ,  G01P15/00 ,  G01C19/62

CPC classification number: G21K1/006 ,  G01C19/58 ,  G01C19/62 ,  G01P15/00

Abstract: Atom-scale particles, e.g., neutral and charged atoms and molecules, are pre-cooled, e.g., using magneto-optical traps (MOTs), to below 100 μK to yield cold particles. The cold particles are transported to a sensor cell which cools the cold particles to below 1 μK using an optical trap; these particles are stored in a reservoir within an optical trap within the sensor cell so that they are readily available to replenish a sensor population of particles in quantum superposition. A baffle is disposed between the MOTs and the sensor cell to prevent near-resonant light leaking from the MOTs from entering the sensor cell (and exciting the ultra-cold particles in the reservoir). The transporting from the MOTs to the sensor cell is effected by moving optical fringes of optical lattices and guiding the cold particles attached to the fringes along a meandering path through the baffle and into the sensor cell.

公开(公告)号：US20230296380A1

公开(公告)日：2023-09-21

申请号：US18041053

申请日：2020-08-13

Applicant: SRI International

Inventor： Sterling Eduardo McBride ,  Alan M. Braun ,  Seth Charles Caliga

IPC: G01C19/62 ,  G01R33/26

CPC classification number: G01C19/62 ,  G01R33/26

Abstract: An assembly includes one or more high temperature vapor cells positioned along an axis of the assembly, a vacuum envelope encasing the one or more high temperature vapor cells, and one or more sets of low thermal conductivity mounting structures coupled to the vacuum envelope. Each set of low thermal conductivity mounting structures is configured to position a corresponding one of the high temperature vapor cells within the vacuum envelope.

公开(公告)号：US20190293736A1

公开(公告)日：2019-09-26

申请号：US14188436

申请日：2014-02-24

Applicant: MICHAEL D. BULATOWICZ

Inventor： MICHAEL D. BULATOWICZ

IPC: G01R33/26 ,  G01C19/62

Abstract: One example embodiment includes an atomic sensor system. The system includes a vapor cell comprising an alkali metal vapor that precesses in response to a magnetic field. The system also includes a probe laser that generates an optical probe beam that is modulated about a center frequency and which is provided through the vapor cell. A photodetector assembly generates an intensity signal corresponding to a Faraday rotation associated with a detection beam that is associated with the optical probe beam exiting the vapor cell. The system further includes a detection system configured to demodulate the intensity signal at a frequency corresponding to a modulation frequency of the optical probe beam and to generate a feedback signal based on the demodulated intensity signal. The feedback signal is provided to the probe laser to substantially stabilize the center frequency of the optical probe beam based on the feedback signal.

公开(公告)号：US20190056464A1

公开(公告)日：2019-02-21

申请号：US16166982

申请日：2018-10-22

Applicant: Twinleaf LLC

Inventor： Elizabeth L. Foley ,  Thomas W. Kornack

IPC: G01R33/26 ,  H05K1/02 ,  H05B3/26 ,  G01R33/032 ,  G01C19/62

Abstract: Magnetometers, atomic sensors and related systems, methods and devices are disclosed.

公开(公告)号：US09970999B2

公开(公告)日：2018-05-15

申请号：US13907293

申请日：2013-05-31

Applicant: Michael S. Larsen ,  Henry C. Abbink ,  Thad G. Walker ,  Michael D. Bulatowicz

Inventor： Michael S. Larsen ,  Henry C. Abbink ,  Thad G. Walker ,  Michael D. Bulatowicz

IPC: G01R33/26 ,  G01R33/32 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62 ,  G01R33/323

Abstract: One embodiment includes a nuclear magnetic resonance (NMR) sensor system. The system includes a pump laser configured to generate an optical pump beam at a first wavelength and a probe laser configured to generate an optical probe beam at a second wavelength that is different from the first wavelength. The system also includes beam optics configured to direct the pump laser and the probe laser along orthogonal axes through a sensor cell comprising an alkali metal vapor. The system further includes detection optics that include a photodetector assembly configured to measure at least one characteristic associated with the optical probe beam leaving the sensor cell for measurement of a polarization vector of the alkali metal vapor. The detection optics can include at least one filter configured to filter light having the first wavelength and to pass light having the second wavelength to the photodetector assembly.

公开(公告)号：US09500725B2

公开(公告)日：2016-11-22

申请号：US13960127

申请日：2013-08-06

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01R33/26 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62

Abstract: An atomic sensor system includes a magnetic field generator configured to generate a magnetic field along an axis and a probe laser configured to generate an optical probe beam. Beam optics direct the optical probe beam through a sensor cell comprising an alkali metal vapor such that the optical probe beam has at least a vector component along the axis. The system also includes detection optics comprising a photodetector assembly configured to measure a Faraday rotation associated with the optical probe beam exiting the sensor cell and to generate a feedback signal based on the Faraday rotation associated with the optical probe beam exiting the sensor cell. The system further includes a laser controller configured to modulate a frequency of the optical probe beam about a center frequency and to substantially stabilize the center frequency of the optical probe beam based on the feedback signal.

Abstract translation: 原子传感器系统包括被配置为沿着轴产生磁场的磁场发生器和被配置为产生光学探测光束的探测激光器。 光束光学器件将光学探针光束引导通过包含碱金属蒸气的传感器单元，使得光学探针光束沿轴线至少具有矢量分量。 该系统还包括检测光学器件，其包括光电检测器组件，其被配置为测量与离开传感器单元的光学探针光束相关联的法拉第旋转，并且基于与离开传感器单元的光学探针光束相关联的法拉第旋转生成反馈信号。 该系统还包括激光控制器，该激光控制器被配置成基于反馈信号调制围绕中心频率的光学探针光束的频率并且基本上稳定光学探针光束的中心频率。

公开(公告)号：US20150346293A1

公开(公告)日：2015-12-03

申请号：US14291595

申请日：2014-05-30

Applicant: MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

Inventor： MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

IPC: G01R33/26 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62

Abstract: One example embodiment includes an atomic sensor system. A probe laser generates a probe beam. A first portion of the probe beam is provided through a sensor cell comprising a first alkali vapor to calculate a measurable parameter of the system based on a first detection beam corresponding to the first portion of the probe beam exiting the sensor cell. A second portion of the probe beam can be provided through a stabilization cell that comprises a second vapor. A detection system can be configured to stabilize the frequency of the probe beam in a manner that is on-resonance with respect to an optical transition wavelength of the second alkali vapor and off-resonance with respect to an optical transition wavelength of the first alkali vapor based on a second detection beam corresponding to the second portion of the probe beam exiting the stabilization cell.

Abstract translation: 一个示例性实施例包括原子传感器系统。 探头激光产生探针光束。 探测光束的第一部分通过包括第一碱性蒸汽的传感器单元提供，以基于对应于离开传感器单元的探测光束的第一部分的第一检测光束来计算系统的可测量参数。 探针束的第二部分可以通过包括第二蒸气的稳定池提供。 检测系统可以被配置为以相对于第二碱性蒸汽的光学跃迁波长为共振的方式稳定探测光束的频率，并且相对于第一碱性蒸气的光学跃迁波长为非共振 基于对应于离开稳定单元的探测光束的第二部分的第二检测光束。

公开(公告)号：US20150330786A1

公开(公告)日：2015-11-19

申请号：US14278940

申请日：2014-05-15

Applicant: MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

Inventor： MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

IPC: G01C19/62 ,  G01R33/26

CPC classification number: G01C19/62 ,  G01R33/26

Abstract: One embodiment includes an atomic sensor system. The system includes a vapor cell that is sealed to enclose an alkali metal that is spin-polarized by an optical beam. The vapor cell includes a mirror at a distal end. The system also includes an optical system including a photodetector system and a laser that generates the optical beam. The optical beam is provided into a proximal end of the vapor cell and is reflected back to the photodetector system via the mirror as a reflected optical beam to generate at least one intensity signal. The optical system further includes a control system that modulates a wavelength of the optical beam between an on-resonance wavelength and an off-resonance wavelength with respect to the alkali metal. The system also includes a processor that calculates a measurable parameter associated with the atomic sensor system based on the at least one intensity signal.

Abstract translation: 一个实施例包括原子传感器系统。 该系统包括一个蒸气池，其被密封以包围由光束自旋极化的碱金属。 蒸汽池包括在远端的反射镜。 该系统还包括包括光电检测器系统和产生光束的激光器的光学系统。 光束被提供到蒸汽单元的近端，并且经由反射镜作为反射光束被反射回到光电检测器系统以产生至少一个强度信号。 光学系统还包括控制系统，该控制系统调制相对于碱金属的共振波长和离共振波长之间的光束的波长。 该系统还包括处理器，该处理器基于至少一个强度信号来计算与原子传感器系统相关联的可测量参数。

公开(公告)号：US09062973B2

公开(公告)日：2015-06-23

申请号：US13017660

申请日：2011-01-31

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01V3/00 ,  G01C19/62 ,  G01C19/58 ,  G01R33/26

CPC classification number: G01C19/62 ,  G01C19/58 ,  G01R33/26

Abstract: One embodiment of the invention includes an atom beam gyroscope system. The system includes an atom beam system that generates an atom beam comprising alkali metal atoms along a length of a detection region orthogonal to a sensitive axis. The system also includes a detection system comprising a detection laser and photodetector. The detection laser can generate an optical detection beam that illuminates the detection region to pump the alkali metal atoms. The photodetector can measure an optical absorption of the optical detection beam by the alkali metal atoms in the atom beam and to generate an intensity signal associated with the measured optical absorption. The system further includes a gyroscope sensor configured to calculate rotation of the atom beam gyroscope system about the sensitive axis based on a magnitude of the intensity signal due to a Doppler-shift in energy of the alkali metal atoms in the atom beam.

Abstract translation: 本发明的一个实施例包括原子束陀螺仪系统。 该系统包括原子束系统，其产生沿着与敏感轴正交的检测区域的长度的包含碱金属原子的原子束。 该系统还包括检测系统，其包括检测激光和光检测器。 检测激光器可以产生照射检测区域以泵送碱金属原子的光学检测光束。 光电检测器可以通过原子束中的碱金属原子测量光学检测光束的光吸收，并产生与所测量的光吸收相关的强度信号。 该系统还包括陀螺仪传感器，该陀螺仪传感器被配置成基于原子束中的碱金属原子的能量的多普勒偏移，基于强度信号的大小来计算原子束陀螺仪系统围绕敏感轴的旋转。

公开(公告)号：US4544891A

公开(公告)日：1985-10-01

申请号：US453014

申请日：1982-12-27

Applicant: Francis A. Karwacki

Inventor： Francis A. Karwacki

IPC: G01C19/62 ,  G01R33/08

CPC classification number: G01C19/62

Abstract: A nuclear magnetic resonance gyroscope which derives angular rotation thef from the phases of precessing nuclear moments utilizes a single-resonance cell situated in the center of a uniform DC magnetic field. The field is generated by current flow through a circular array of coils between parallel plates. It also utilizes a pump and readout beam and associated electronics for signal processing and control. Encapsulated in the cell for sensing rotation are odd isotopes of Mercury Hg.sup.199 and Hg.sup.201. Unpolarized intensity modulated light from a pump lamp is directed by lenses to a linear polarizer, quarter wave plate combination producing circularly polarized light. The circularly polarized light is reflected by a mirror to the cell transverse to the field for optical pumping of the isotopes. Unpolarized light from a readout lamp is directed by lenses to another linear polarizer. The linearly polarized light is reflected by another mirror to the cell transverse to the field and orthogonal to the pump lamp light. The linear light after transversing the cell strikes an analyzer where it is converted to an intensity-modulated light. The modulated light is detected by a photodiode processed and utilized as feedback to control the field and pump lamp excitation and readout of angular displacement.

Abstract translation: 从进动的核时刻的相位导出其角旋转的核磁共振陀螺仪利用位于均匀DC磁场中心的单谐振单元。 该场由通过平行板之间的圆形线圈阵列的电流产生。 它还利用泵和读出光束以及相关电子元件进行信号处理和控制。 用于感测旋转的细胞被封装在汞Hg199和Hg201的奇异同位素上。 来自泵浦灯的非偏振强度调制光由透镜引导到线性偏振器，产生圆偏振光的四分之一波片组合。 圆偏振光被反射镜反射到横向于场的单元，用于光泵浦同位素。 来自读出灯的非偏振光由透镜引导到另一线性偏振器。 线性偏振光被另一个反射镜反射到横向于场的单元并且与泵灯的光正交。 细胞横切之后的线性光照射到分析仪上，在分析仪中被转换成强度调制的光。 被调制的光被经过光电二极管处理并被用作反馈来控制场和泵灯的激发和角位移的读出。