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公开(公告)号：US11152756B2
公开(公告)日：2021-10-19
申请号：US16518714
申请日：2019-07-22
发明人： Christopher Monroe , Kai Hudek , Jonathan Mizrahi , Marko Cetina , Sarah Margaret Kreikemeier , Michael Goldman , Kristin Beck
摘要： The disclosure describes aspects of laser cavity repetition rate tuning and high-bandwidth stabilization of pulsed lasers. In one aspect, an output optical coupler is described that includes a cavity output coupler mirror, a piezoelectric actuator coupled to the cavity output coupler mirror, a locking assembly within which the cavity output coupler mirror and the piezoelectric actuator are positioned, and one or more components coupled to the locking assembly. The components are configured to provide multiple positional degrees of freedom for tuning a frequency comb spectrum of the pulsed laser (e.g., tuning a repetition rate) by adjusting at least one position of the locking assembly with the cavity output coupler mirror. A method of adjusting an output optical coupler in a pulsed laser is also described. These techniques may be used in different applications, including quantum information processing.
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公开(公告)号：US11033981B2
公开(公告)日：2021-06-15
申请号：US16515508
申请日：2019-07-18
IPC分类号： B23K26/064 , G06N10/00 , G02F1/33 , B82Y10/00
摘要： The disclosure describes various aspects of acousto-optic modulator (AOM) configurations for quantum processing. A method is described including generating, by a first AOM from a laser beam, first and second diffracted laser beams at different angles based on first and second radio frequency (RF) tones. An optical component focuses the diffracted laser beams onto a second AOM, which generates third and fourth diffracted laser beams based on the first RF tone and a third RF tone and the second RF tone and a fourth RF tone respectively, wherein the third and fourth diffracted laser beams are substantially parallel when incident on a respective ion in a chain of ions in a trap. Quantum information in the ion is controlled to perform quantum processing based on the third and fourth diffracted laser beams. Another method is described including generating, by an AOM, a small polarization rotation of an undiffracted laser beam.
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公开(公告)号：US10910786B2
公开(公告)日：2021-02-02
申请号：US16506873
申请日：2019-07-09
发明人： Kai Hudek
摘要： The disclosure describes aspects of laser cavity optical alignment, and more particularly, in situ alignment of optical devices in an optical system for replacement or upgrade. In one aspect, a method for optical alignment in an optical system is described that includes providing, via a positioning system, an optical beam to measure surface features and position of a first device under test (DUT), removing the first DUT from the optical system, placing a second DUT in the optical system at substantially the same position from which the first DUT was removed, providing, via the positioning system, an optical beam to measure surface features and position of the second DUT, aligning the second DUT based on the measurements made of the first DUT and the second DUT, and verifying operation of the second DUT in the optical system. The DUT can be an optical device such as an output optical coupler.
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公开(公告)号：US11083075B2
公开(公告)日：2021-08-03
申请号：US16242431
申请日：2019-01-08
发明人： Jason Madjdi Amini , Jonathan Mizrahi , Kai Hudek , Marko Cetina
摘要： The disclosure describes various aspects of a shed-resistant thermal atom source. More specifically, a thermal atom source is described for uniform thermal flux of target atomic species in which a metal wadding material is used as an intermediary surface for sublimation of the atoms, preventing the source material from shedding or dropping. In an aspect, a thermal atom source may include a container with closed and open ends, and inside a source material near the closed end and a wadding between the source material and the open end; a heater coupled to the closed end; one or more clamps configured to secure the container and the heater; and a current source coupled to the container and the heater to cause a temperature to increase such that a portion of the source material is released and diffuses to the open end through the wadding prior to being emitted as a flux.
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公开(公告)号：US11381050B2
公开(公告)日：2022-07-05
申请号：US17085563
申请日：2020-10-30
发明人： Kai Hudek
摘要： The disclosure describes aspects of laser cavity optical alignment, and more particularly, in situ alignment of optical devices in an optical system for replacement or upgrade. In one aspect, a method for optical alignment in an optical system is described that includes providing, via a positioning system, an optical beam to measure surface features and position of a first device under test (DUT), removing the first DUT from the optical system, placing a second DUT in the optical system at substantially the same position from which the first DUT was removed, providing, via the positioning system, an optical beam to measure surface features and position of the second DUT, aligning the second DUT based on the measurements made of the first DUT and the second DUT, and verifying operation of the second DUT in the optical system. The DUT can be an optical device such as an output optical coupler.
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公开(公告)号：US11536879B2
公开(公告)日：2022-12-27
申请号：US16524637
申请日：2019-07-29
申请人： IonQ, Inc. , Duke University
发明人： Jungsang Kim , David Wong-Campos , Kai Hudek
摘要： The disclosure describes various aspects of techniques for elliptical beam design using cylindrical optics that may be used in different applications, including in quantum information processing (QIP) systems. In an aspect, the disclosure describes an optical system having a first optical component having a first focal length, a second optical component having a second focal length and aligned with a first direction, and a third optical component having a third focal length and aligned with a second direction orthogonal to the first direction. The optical system is configured to receive one or more optical beams (e.g., circular or elliptical) and apply different magnifications in the first direction and the second direction to the one or more optical beams to image one or more elliptical Gaussian optical beams. A method for generating elliptical optical beams using a system as the one described above is also disclosed.
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公开(公告)号：US11322343B2
公开(公告)日：2022-05-03
申请号：US16903174
申请日：2020-06-16
申请人： IonQ, Inc.
摘要： Aspects of the present disclosure describe techniques for optical alignment using a reflective dove prism. For example, a system for optical alignment is described that includes an assembly having a housing with three separate, reflecting structures positioned to produce three reflections of one or more laser beams or one or more images, and a controller configured to control a rotation of the assembly about a pivot point to produce a tilt in orientation of the one or more lasers beams or the one or more images that is twice an angle of rotation of the assembly. Another system and a method for aligning laser beams using a housing with three separate, reflecting structures in a trapped ion quantum information processing (QIP) system are also described.
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公开(公告)号：US12106926B2
公开(公告)日：2024-10-01
申请号：US18355165
申请日：2023-07-19
申请人： IonQ, Inc.
发明人： Kai Hudek , Jason Madjdi Amini
摘要： Aspects of the present disclosure describe an atomic oven including a cathode, an anode that comprises a source material, and a power supply that provides a voltage between the cathode and the anode, wherein applying the voltage causes multiple electrons from the cathode to ablate the source material from the anode or locally heat the anode to cause source material to evaporate from the anode and, in both case, to produce a stream of ablated or evaporated particles that passes through an opening in the cathode.
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公开(公告)号：US11971322B2
公开(公告)日：2024-04-30
申请号：US16725605
申请日：2019-12-23
申请人： IonQ, Inc.
发明人： Jonathan Albert Mizrahi , Kai Hudek
IPC分类号： G01M11/02
CPC分类号： G01M11/0207
摘要： The disclosure describes various aspects of different for automated testing of optical assemblies. A system is described that includes an arm (e.g., a motorized arm) configured to be positioned over an optical assembly having a base plate with multiple optical elements that form one or more optical beam paths. The system also includes at least one optical tool that is configured to be removably attached to the arm and has a measurement instrument to perform a specified test on at least one of the optical beam paths. The arm is configured to adjust its position over the optical assembly to move the optical tool to the correct place to perform the specified test. The system may also include an optical tool changer configured to hold the optical tool in a tool holder when not attached to the arm and to hold additional optical tools in respective tool holders.
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公开(公告)号：US10756683B2
公开(公告)日：2020-08-25
申请号：US16242264
申请日：2019-01-08
申请人： IonQ, Inc.
发明人： Kai Hudek
摘要： The disclosure describes various aspects of a tunable, mechanically stable radio-frequency (RF) amplifier. More specifically, the disclosure describes an RF amplifier designed to be tunable and mechanically stable to match and maintain stable driving of an ion trap for quantum processing applications. A precision actuator is used to finely tune the RF amplifier input in a repeatable and mechanically stable way to match the ion trap resonance. Low-loss tangent materials and torch annealing techniques are used to make the amplifier section mechanically stable.
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