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公开(公告)号：US20210013020A1
公开(公告)日：2021-01-14
申请号：US16903174
申请日：2020-06-16
Applicant: IonQ, Inc.
Inventor： Jaime David WONG-CAMPOS , Kai HUDEK , Shantanu DEBNATH
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20200321949A1
公开(公告)日：2020-10-08
申请号：US16817482
申请日：2020-03-12
Applicant: IONQ, INC.
Inventor： Shantanu DEBNATH , Jason M. AMINI , Jwo-Sy CHEN , Neal PISENTI
IPC: H03K3/38 , H03K19/195 , G06N10/00
Abstract: A method of performing a computational process using a quantum computer includes generating a laser pulse sequence comprising a plurality of laser pulse segments used to perform an entangling gate operation on a first trapped ion and a second trapped ion 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 laser pulse sequence to the first and second trapped ions. Each of the plurality of laser pulse segments has a pulse shape with ramps formed using a spline at a start and an end of each of the plurality of laser pulse segments.
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公开(公告)号：US20240370759A1
公开(公告)日：2024-11-07
申请号：US18048279
申请日：2022-10-20
Applicant: IonQ, Inc.
Inventor： Shantanu DEBNATH , Aleksey BLINOV , Coleman COLLINS , Kevin Antony LANDSMAN , Jason Hieu Van NGUYEN , Hermann UYS , Kristin M. BECK , Peter Lukas Wilhelm MAUNZ , Matthew KEESAN
IPC: G06N10/70
Abstract: Aspects of the present disclosure relate generally to systems and methods for use in the implementation and/or operation of quantum information processing (QIP) systems. To optimize the performance of QIP systems or quantum computers in terms of both fidelity and algorithm uptime or throughput, described are techniques to stabilize continuous and discrete errors from drifting and/or noisy secondary observables to achieve long term stable operation.
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14.发明申请公开(公告)号：US20230129122A1
公开(公告)日：2023-04-27
申请号：US18048268
申请日：2022-10-20
Applicant: IonQ, Inc.
Inventor： Shantanu DEBNATH , Vandiver CHAPLIN , Kristin M. BECK , Melissa JAMESON , Jason Hieu Van NGUYEN
Abstract: Aspects of the present disclosure relate generally to systems and methods for use in the implementation and/or operation of quantum information processing (QIP) systems, and more particularly, to techniques for removing or correcting for translation errors between a programmed strength and an applied strength of quantum gates. A method is described that includes determining, for each quantum gate in a quantum operation, a non-linearity between an applied strength of a laser beam used for the respective quantum gate and a programmed strength intended to be applied by the laser beam for the respective quantum gate. The method further includes linearizing the non-linearity for each quantum gate and storing linearization information in memory. Moreover, the method includes applying the linearization information to correct for the non-linearity when implementing each quantum gate as part of the quantum operation. A system is also described that is configured to implement the method described above.
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公开(公告)号：US20230039901A1
公开(公告)日：2023-02-09
申请号：US17880399
申请日：2022-08-03
Applicant: IonQ, Inc.
Inventor： Kevin Antony LANDSMAN , Aleksey BLINOV , Shantanu DEBNATH , Vandiver CHAPLIN , Kristin Marie BECK , Andrew Maps DUCORE , Melissa JAMESON , Jason Hieu Van NGUYEN , Felix TRIPIER
Abstract: Techniques to address the problem of having micromotion and stray fields affect trapped ions and the operation of QIP systems based on trapped ions are described. For example, one technique or approach may involve collecting scattered photons off the ions using a resonant or near-resonant oscillating electric field (e.g., a laser beam or a microwave source) with some projection in the axis or direction of micromotion that one wishes to reduce. Another technique or approach may include raising and lowering the trapping potentials to see how the ion position changes. The information collected from these techniques may be used to provide appropriate adjustments. Accordingly, the present disclosure describes methods, scripts, or techniques that minimize the effects of micromotion.
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公开(公告)号：US20200082291A1
公开(公告)日：2020-03-12
申请号：US16514099
申请日：2019-07-17
Applicant: University of Maryland, College Park , IonQ, Inc.
Inventor： Shantanu DEBNATH , Norbert M. LINKE , Christopher R. MONROE , Caroline FIGGATT
Abstract: Aspects of the present disclosure describe techniques for controlling quantum states of ions in an ion chain for a quantum operation. For example, a method is described that includes providing, from a first direction, a global optical beam to the ions in the ion chain, and providing, from a second direction different from the first direction, to each ion in a subset of the ions in the ion chain, a respective addressing optical beam. The method further includes dynamically controlling each of the addressing optical beams being provided by using a respective channel in a multi-channel acousto-optic modulator (AOM) to implement, with the ion chain, one or more quantum gates in a sequence of quantum gates of the quantum operation. Aspects of a quantum information processing (QIP) system that includes the multi-channel AOM for performing the method are also described.
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