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公开(公告)号：US20230018878A1
公开(公告)日：2023-01-19
申请号：US17866258
申请日：2022-07-15
申请人： IonQ, Inc.
摘要： Aspects of the present disclosure may include a method and/or a system for biasing FOFI qubits including applying a magnetic field to one or more first order field insensitive (FOFI) qubits, wherein a first magnetic field sensitivity of the one or more FOFI qubits in a first state of a first manifold is substantially equal to a second magnetic field sensitivity of the one or more FOFI qubits in a second state of a second manifold, a global optical beam to the one or more FOFI qubits, and one or more Raman beams, wherein an application of at least one of the global optical beam or the one or more Raman beams transitions the one or more FOFI qubits from the first state to the second state.
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公开(公告)号：US20220415534A1
公开(公告)日：2022-12-29
申请号：US17902215
申请日：2022-09-02
申请人： Zhejiang Lab , Zhejiang University
发明人： Cuihong Li , Yuanyuan Ma , Yizhou Zhang , Xiaowen Gao , Shaochong Zhu , Huizhu Hu
摘要： A method for enhancing vacuum tolerance of optical levitation particles includes steps of: (1) turning on a trapping laser to form an optical trap, loading the particles to an effective capture region of the optical trap, and collecting scattered light signals; (2) turning on the preheating laser, and directing a preheating laser beam to the captured particles; (3) adjusting a power of the preheating laser until a particle heating rate is larger than a heat dissipation rate; (4) turning on the vacuum pump, and stopping evacuating when a vacuum degree is greater than a vacuum inflection point of a first reduction of the effective capture region of the optical trap; and (5) turning off the preheating laser when the scattered light signals collected by the photodetector no longer changes. The present invention improves a stable capture probability of the particles in high vacuum environment.
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公开(公告)号：US20220387823A1
公开(公告)日：2022-12-08
申请号：US17820555
申请日：2022-08-17
发明人： Feichao FU , Peng WANG , Shoubo HE , Peng CHENG , Cheng NI
摘要： According to an aspect of the present disclosure, a beam control device for radiotherapy is provided. The beam control device may include an electron beam generator configured to emit an electron beam for radiotherapy toward a subject in a first direction. The beam control device may further include a first deflection device configured to generate a defocused electron beam by defocusing the electron beam in a second direction, the second direction being different from the first direction.
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公开(公告)号：US20220352684A1
公开(公告)日：2022-11-03
申请号：US17621581
申请日：2020-06-29
摘要： The present disclosure provides an optical system (100) for controlling atoms. The optical system (100) comprises a laser source (10) for generating a laser beam at a carrier frequency and microwave and radio frequency (MW/RF) sources (41 and 45) for generating I and Q modulation signals at a set of frequencies, wherein the set of frequencies comprises at least two frequencies. The optical system (100) further comprises an IQ modulator (20) configured for receiving the laser beam and the generated signals at the set of frequencies and for outputting an output laser beam (Eout) based on the received laser beam and the generated signals at the set of frequencies, wherein the output laser beam (Eout) comprises multi-toned optical single-sidebands (MT-OSSB) at the set of frequencies with the carrier frequency being suppressed.
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公开(公告)号：US20220319730A1
公开(公告)日：2022-10-06
申请号：US17651840
申请日：2022-02-21
申请人： Quantinuum LLC
摘要： A loading assembly configured for providing atomic objects to an atomic object confinement apparatus is provided. The loading assembly comprises one or more ovens. Each oven (a) comprises a respective oven nozzle and (b) is configured to generate a respective atomic flux of a respective atomic species via the respective oven nozzle. The loading assembly comprises a mirror array and a magnet array configured to, when optical beams are provided to the mirror and magnet assembly, generate a two-dimensional magneto-optical trap (2D MOT). The 2D MOT is configured to generate a substantially collimated atomic beam from the respective atomic fluxes generated by the one or more ovens. The loading assembly further comprises a differential pumping tube defining a beam path. The differential pumping tube is configured to provide the substantially collimated atomic beam via the beam path. The respective oven nozzle of each of the one or more ovens is misaligned with the beam path and the 2D MOT is configured to provide the substantially collimated atomic beam in alignment with the beam path.
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公开(公告)号：US20220301738A1
公开(公告)日：2022-09-22
申请号：US17620679
申请日：2019-06-19
发明人： Sebastian BLATT , Andre HEINZ , Immanuel BLOCH
摘要： An optical resonator device (100) with crossed cavities, in particular being configured for optically trapping atoms, comprises a first linear optical resonator (10) extending between first resonator mirrors (11A, 11B) along a first resonator light path (12) and supporting a first resonator mode, a second linear optical resonator (20) extending between second resonator mirrors (21A, 21B) along a second resonator light path (22) and supporting a second resonator mode, wherein the first and second resonator light paths (12, 22) span a main resonator plane, and a carrier device carrying the first and second resonator mirrors (11A, 11B, 21A, 21B), wherein the first and second resonator mirrors (11, 21) are arranged such that the first and second resonator modes cross each other for providing an optical lattice trap (1) in the main resonator plane. The carrier device comprises a monolithic spacer body (30) being made of an ultra-low-expansion material and comprising first carrier surfaces (31) accommodating the first resonator mirrors (11A, 11B) and second carrier surfaces (32) accommodating the second resonator mirrors (21A, 21B), wherein the first resonator light path (12) extends through a first spacer body bore (33) in the spacer body (30) between the first carrier surfaces (31), and the second resonator light path (22) extends through a second spacer body bore (34) in the spacer body (30) between the second carrier surfaces (32). Furthermore, an atom trapping method for creating a two-dimensional arrangement of atoms and an atom trap apparatus, like an optical atomic clock, a quantum simulation and/or a quantum computing device are described.
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公开(公告)号：US20220284335A1
公开(公告)日：2022-09-08
申请号：US17746544
申请日：2022-05-17
申请人： IONQ, INC.
发明人： Yunseong NAM , Reinhold BLUMEL , Nikodem GRZESIAK
摘要： A method of performing a computation using a quantum computer includes generating a plurality of laser pulses used to be individually applied to each of a plurality of trapped ions that are aligned in a first direction, each of the trapped ions having two frequency-separated states defining a qubit, and applying the generated plurality of laser pulses to the plurality of trapped ions to perform simultaneous pair-wise entangling gate operations on the plurality of trapped ions. Generating the plurality of laser pulses includes adjusting an amplitude value and a detuning frequency value of each of the plurality of laser pulses based on values of pair-wise entanglement interaction in the plurality of trapped ions that is to be caused by the plurality of laser pulses.
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公开(公告)号：US11361875B2
公开(公告)日：2022-06-14
申请号：US17307987
申请日：2021-05-04
发明人： Fusheng Chen , Haicen Mao , Jun Cheng , Chen Huang , Bin Wang , Kangqi Liu , Jiapeng Zhou
IPC分类号： G21K1/00 , G21K1/093 , G21K1/02 , H03L7/26 , G01B9/02015
摘要： The present application discloses a control method for fast trapping and high-frequency mutual ejection of cold atom groups. The control method includes: arranging three groups of optical stops on three groups of light sources (splitters) in three-dimensional magneto-optical traps, to form a shaded regions; ejecting a cold atom group from the first three-dimensional magneto-optical trap along a movement trajectory to the second three-dimensional magneto-optical trap, where the movement trajectory passes through the shaded regions of the two three-dimensional magneto-optical traps; and, when it is determined that the cold atom group enters the shaded region of the first three-dimensional magneto-optical trap, trapping a next cold atom group by turning on three-dimensional cooling light and three-dimensional repumping light in the first three-dimensional magneto-optical trap.
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公开(公告)号：US20220181041A1
公开(公告)日：2022-06-09
申请号：US17540479
申请日：2021-12-02
申请人： Asa Asadollahbaik
摘要： The present disclosure relates to a rotationally symmetric dielectric structure for optical beam shaping and for trapping and manipulating individual particles and living biological cells in aqueous medium, concentrically mounted on the facet of a single-mode optical fiber, wherein the structure comprises at least three total reflection surfaces configured to split a light field emerging from the single-mode optical fiber into at least two separate light paths and wherein the at least three total reflection surfaces are further configured to bring the separate light paths together as a ring beam in a common focal point.
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公开(公告)号：US20220159883A1
公开(公告)日：2022-05-19
申请号：US17307716
申请日：2021-05-04
申请人： ColdQuanta, Inc.
发明人： Evan SALIM , Hugo LEON
摘要： A magnetic-field shield is used to shield a magneto-optical trap (MOT) in an ultra-high vacuum (UHV) cell from magnetic fields generated by an ion pump used to maintain the UHV. The magnetic-field shield includes an enclosure of ferro-magnetic material that acts to capture portions of the magnetic field generated by the ion pump. However, as the distance between the ion pump and the MOT is less than 6 centimeters, enough of the magnetic field escapes through the ferro-magnetic material, and this leakage could impair the MOT. A drive magnet attached to the yoke redirects magnetic flux, that would otherwise leak out of the magnetic-field shield, along a path within the ferro-magnetic enclosure and away from the MOT.
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