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公开(公告)号：US12142473B2
公开(公告)日：2024-11-12
申请号：US18223246
申请日：2023-07-18
Applicant: Duke University
Inventor： Jungsang Kim , Kai Hudek , Geert Vrijsen , Robert Spivey , Peter Maunz
Abstract: A package-level, integrated high-vacuum ion-chip enclosure having improved thermal characteristics is disclosed. Enclosures in accordance with the present invention include first and second chambers that are located on opposite sides of a chip carrier, where the chambers are fluidically coupled via a conduit through the chip carrier. The ion trap is located in the first chamber and disposed on the chip carrier. A source for generating an atomic flux is located in the second chamber. The separation of the source and ion trap in different chambers affords thermal isolation between them, while the conduit between the chambers enables the ion trap to receive the atomic flux.
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公开(公告)号：US11274962B2
公开(公告)日：2022-03-15
申请号：US16189986
申请日：2018-11-13
Applicant: Duke University , Ohio State Innovation Foundation
Inventor： Jungsang Kim , Clinton Cahall , Daniel J. Gauthier , Gregory P. Lafyatis , Kathryn L. Nicolich , Nurul T. Islam
Abstract: An apparatus, method and system for resolving an n-number of photons from an optical source multiphoton event, the apparatus includes a cryostat includes a single-pixel superconducting nanowire single-photon detector (SNSPD) configured to receive an optical signal and therefrom produce a corresponding electrical signal, and a current bias source configured to supply a bias current to the SNSPD. The apparatus further includes a low-noise amplifier configured to produce a low-noise amplified electrical signal from the electrical signal, a signal processing circuit configured to receive the low-noise amplified electrical signal having a waveform rising edge of an n-number photon event to produce either a time-differentiated electrical signal by processing the waveform rising edge with a differentiating circuit to generate a differentiated peak corresponding to the n-number photon event, or a time-to-amplitude electrical signal by processing the waveform rising edge with a precision timing circuit to generate a rise time measurement corresponding to the n-number photon event. The apparatus further includes an amplitude discriminating device configured to determine an integer n-number photon event based on measuring a value of the n-number photon event.
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公开(公告)号：US11195117B2
公开(公告)日：2021-12-07
申请号：US15844357
申请日：2017-12-15
Applicant: UNIVERSITY OF MARYLAND , DUKE UNIVERSITY , UNIVERSITY OF BRITISH COLUMBIA
Inventor： Christopher Monroe , Jungsang Kim , Robert Raussendorf
Abstract: A modular quantum computer architecture is developed with a hierarchy of interactions that can scale to very large numbers of qubits. Local entangling quantum gates between qubit memories within a single modular register are accomplished using natural interactions between the qubits, and entanglement between separate modular registers is completed via a probabilistic photonic interface between qubits in different registers, even over large distances. This architecture is suitable for the implementation of complex quantum circuits utilizing the flexible connectivity provided by a reconfigurable photonic interconnect network. The subject architecture is made fault-tolerant which is a prerequisite for scalability. An optimal quantum control of multimode couplings between qubits is accomplished via individual addressing the qubits with segmented optical pulses to suppress crosstalk in each register, thus enabling high-fidelity gates that can be scaled to larger qubit registers for quantum computation and simulation.
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公开(公告)号：US11010517B2
公开(公告)日：2021-05-18
申请号：US16678835
申请日：2019-11-08
Applicant: IonQ, Inc. , Duke University
Inventor： Yunseong Nam , Dmitri Maslov , Jungsang Kim , Kenneth Brown
IPC: G06F30/327 , G06N10/00 , G06F111/20
Abstract: The disclosure describes a method, an apparatus, a computer-readable medium, and/or means for reducing two-qubit gates in quantum circuits may include receiving a netlist including information relating to a first plurality of two-qubit quantum gates that form the quantum circuits, performing a controlled gate cancellation operation on the information relating to a first plurality of two-qubit quantum gates to produce a second plurality of two-qubit quantum gates that is functionally equivalent to the first plurality of two-qubit quantum gates, wherein a first number of two-qubit quantum gates in the first plurality of two-qubit quantum gates is larger than a second number of two-qubit quantum gates in the second plurality of two-qubit quantum gates, generating a new netlist containing information about the second plurality of two-qubit quantum gates, and providing the new netlist to implement a functionality of the quantum circuits based on the second plurality of two-qubit quantum gates.
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公开(公告)号：US10510523B2
公开(公告)日：2019-12-17
申请号：US16037988
申请日：2018-07-17
Applicant: Duke University
Inventor： Jungsang Kim , Andre Van Rynbach , Peter Maunz
Abstract: An ion-trap system having a trapping location that is controllable with nanometer-scale precision in three dimensions is disclosed. The ion-trap system includes an ion trap that includes a pair of RF driver electrodes, a pair of tuning electrodes operably coupled with the RF driver electrodes to collectively generate an RF field having an RF null that defines the trapping location, as well as a plurality of DC electrodes that are operably coupled with the RF driver electrodes and the tuning electrodes. Each tuning electrode is driven with an RF signal whose amplitude and phase is independently controllable. By controlling the amplitudes of the RF signals applied to the tuning electrodes, the height of the trapping location above the mirror is controlled. The position of the tuning location along two orthogonal lateral directions is controlled by controlling a plurality of DC voltages applied to the plurality of DC electrode pads.
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Patent Agency Ranking
公开(公告)号：US12299537B2
公开(公告)日：2025-05-13
申请号：US18388328
申请日：2023-11-09
Applicant: UNIVERSITY OF MARYLAND , DUKE UNIVERSITY
Inventor： Christopher Monroe , Jungsang Kim
Abstract: A modular quantum computer architecture is developed with a hierarchy of interactions that can scale to very large numbers of qubits. Local entangling quantum gates between qubit memories within a single modular register are accomplished using natural interactions between the qubits, and entanglement between separate modular registers is completed via a probabilistic photonic interface between qubits in different registers, even over large distances. This architecture is suitable for the implementation of complex quantum circuits utilizing the flexible connectivity provided by a reconfigurable photonic interconnect network. The subject architecture is made fault-tolerant which is a prerequisite for scalability. An optimal quantum control of multimode couplings between qubits is accomplished via individual addressing the qubits with segmented optical pulses to suppress crosstalk in each register, thus enabling high-fidelity gates that can be scaled to larger qubit registers for quantum computation and simulation.
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公开(公告)号：US12165007B2
公开(公告)日：2024-12-10
申请号：US17587957
申请日：2022-01-28
Applicant: Duke University , IonQ, Inc.
Inventor： Jungsang Kim , David Moehring , Omar Shehab , Yunseong Nam , Jonathan Mizrahi , Stewart Allen
Abstract: The disclosure describes various aspects of a software-defined quantum computer. For example, a software-defined quantum computing architecture for allocating qubits is described that includes an application programming interface (API); a quantum operating system (OS) on which the API executes, with the quantum OS including a resource manager and a switch; and a plurality of quantum cores connected by the switch of the quantum resource OS. Moreover, the resource manager of the quantum resource OS determines an allocation of a plurality of qubits in the plurality of quantum cores.
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公开(公告)号：US11749518B2
公开(公告)日：2023-09-05
申请号：US16913932
申请日：2020-06-26
Applicant: Duke University
Inventor： Jungsang Kim , Kai Hudek , Geert Vrijsen , Robert Spivey , Peter Maunz
CPC classification number: H01J49/422 , G06N10/00 , H01J49/16 , H01J49/24 , H01J49/42
Abstract: A package-level, integrated high-vacuum ion-chip enclosure having improved thermal characteristics is disclosed. Enclosures in accordance with the present invention include first and second chambers that are located on opposite sides of a chip carrier, where the chambers are fluidically coupled via a conduit through the chip carrier. The ion trap is located in the first chamber and disposed on the chip carrier. A source for generating an atomic flux is located in the second chamber. The separation of the source and ion trap in different chambers affords thermal isolation between them, while the conduit between the chambers enables the ion trap to receive the atomic flux.
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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
Applicant: IonQ, Inc. , Duke University
Inventor： Jungsang Kim , David Wong-Campos , Kai Hudek
Abstract: 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：US20130242060A1
公开(公告)日：2013-09-19
申请号：US13889007
申请日：2013-05-07
Applicant: DUKE UNIVERSITY
Inventor： David Jones Brady , Jungsang Kim , Daniel Marks , Hui Seong Son
IPC: H04N13/02
CPC classification number: H04N5/2624 , G02B13/06 , G02B27/0025 , G03B37/04 , H04N5/2254 , H04N5/23212 , H04N5/23238 , H04N13/204
Abstract: A multiscale imaging system including microcameras having controllable focus, dynamic range, exposure, and magnification is disclosed. The objective lens forms a three-dimensional image field of a scene. Image regions of the image field are relayed by the microcameras onto their respective focal-plane arrays, which collectively provide a plurality of digital sub-images of the scene. The digital sub-images can then be used to form a composite digital image of the scene that can have enhanced depth-of-field, enhanced dynamic range, parallax views of the scene, or three-dimensionality.
Abstract translation: 公开了一种包括具有可控焦点，动态范围，曝光和放大倍率的微型摄像机的多尺度成像系统。 物镜形成场景的三维图像场。 图像场的图像区域由微型摄像机中继到它们各自的焦平面阵列上，这些阵列共同提供场景的多个数字子图像。 然后可以使用数字子图像来形成场景的复合数字图像，其可以具有增强的景深，增强的动态范围，场景的视差或三维度。
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