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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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2.发明申请公开(公告)号：US20210057872A1
公开(公告)日：2021-02-25
申请号：US16995642
申请日：2020-08-17
Applicant: IonQ, Inc.
Inventor： Jonathan Albert MIZRAHI , Neal PISENTI
IPC: H01S3/13
Abstract: Aspects of the present disclosure describe techniques for fast stabilization of multiple controller beams with continuous integrating filter. For example, a method is described for intensity stabilization of laser beams (e.g., ion controller beams) in a trapped ion system, where the method includes applying a linear array of laser beams to respective ions in a linear array of ions in a trap, performing, in response to the laser beams being applied, parallel measurements on the ions, the parallel measurements including multiple, separate measurements on each of the ions to identify fluctuations in intensity in the respective laser beams at each ion, and adjusting the intensity of one or more of the laser beams in response to fluctuations being identified from the parallel measurements. A corresponding system for intensity stabilization of laser beams in a trapped ion system is also described.
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3.发明公开公开(公告)号：US20240079845A1
公开(公告)日：2024-03-07
申请号：US18506744
申请日：2023-11-10
Applicant: IonQ, Inc.
Inventor： Jonathan Albert MIZRAHI , Neal PISENTI
IPC: H01S3/13
CPC classification number: H01S3/1306 , H01S3/1307 , H01S3/1308 , H01S3/09707
Abstract: Aspects of the present disclosure describe techniques for fast stabilization of multiple controller beams with continuous integrating filter. For example, a method is described for intensity stabilization of laser beams (e.g., ion controller beams) in a trapped ion system, where the method includes applying a linear array of laser beams to respective ions in a linear array of ions in a trap, performing, in response to the laser beams being applied, parallel measurements on the ions, the parallel measurements including multiple, separate measurements on each of the ions to identify fluctuations in intensity in the respective laser beams at each ion, and adjusting the intensity of one or more of the laser beams in response to fluctuations being identified from the parallel measurements. A corresponding system for intensity stabilization of laser beams in a trapped ion system is also described.
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Patent Agency Ranking
4.发明申请公开(公告)号：US20220414512A1
公开(公告)日：2022-12-29
申请号：US17887003
申请日：2022-08-12
Applicant: IonQ, Inc.
Inventor： Jwo-Sy CHEN , Neal PISENTI , Yunseong NAM
Abstract: The disclosure describes various techniques to control of small angle Mølmer-Sørensen (MS) gates and to handle asymmetric errors. A technique is described for handling asymmetric errors in quantum information processing (QIP) systems. An exemplary method includes implementing a quantum circuit in the QIP system that has first and second qubit lines, with a first qubit state having a greater measurement error than a second qubit state; swapping the roles of the first and second qubit states at a quantum circuit level in response to at least one of the first qubit line and the second qubit line being expected to be at the first qubit state at a measurement; and enabling a quantum simulation using the quantum circuit with the first and second qubit states reassigned in at least one of the first qubit line and the second qubit line after the swapping of the respective roles.
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公开(公告)号：US20240054376A1
公开(公告)日：2024-02-15
申请号：US18062338
申请日：2022-12-06
Applicant: IonQ, Inc.
Inventor： Kai Makoto HUDEK , Jeremy Matthew SAGE , Neal PISENTI
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 the use of deflectors in trapped ion QIP systems for individually addressing long ion chains. Methods are described for using acousto-optic deflectors (AODs) in optical Raman transitions to implement single-qubit gates and two-qubit gates. A QIP system is also described that is configured to use AODs in optical Raman transitions to implement single-qubit gates and two-qubit gates.
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公开(公告)号：US20230059264A1
公开(公告)日：2023-02-23
申请号：US17890864
申请日：2022-08-18
Applicant: IonQ, Inc. , Duke University
Inventor： Jungsang KIM , Jonathan Albert MIZRAHI , Jason Madjdi AMINI , Kenneth WRIGHT , Neal PISENTI , Hermann UYS , Ming LI , Michael Lurie GOLDMAN , Jeremy Matthew SAGE , Kai Makoto HUDEK , Yunseong NAM , Nikodem GRZESIAK , Reinhold BLUMEL
Abstract: The use of multiple ion chains in a single ion trap for quantum information processing (QIP) systems is described. Each chain can have its own set of laser beams with which to implement and operate quantum gates within that chain, where each chain may therefore correspond to a single quantum computing register or core. Operations can be performed in parallel across all of these chains as they can be treated independently from each other. To implement and operate quantum gates between different chains, neighboring chains are merged into a single, larger chain, in which one can perform quantum gates between any of the ions in the larger chain. The combined chains can then be separated again by another shuttling event as needed. To implement and operate quantum gates between ions which do not occupy neighboring chains, swap gates can be used via a sequence of intervening chains.
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公开(公告)号：US20220120629A1
公开(公告)日：2022-04-21
申请号：US17072916
申请日：2020-10-16
Applicant: IonQ, Inc.
Inventor： Neal PISENTI , Kenneth WRIGHT , Jason Madjdi AMINI , Jwo-Sy CHEN
Abstract: Aspects of the present disclosure describe techniques for measuring collision rate with spatial filtering of scattered light. For example, a method for characterizing vacuum in a chamber is described that includes generating, inside the chamber, a potential well having a single, shallow potential region within which an ion is trapped, the shallow potential region having a lowest potential of the potential well, optically monitoring the ion within the potential well, detecting, based on the optically monitoring, a movement of the ion away from the shallow potential region in response to a collision with a background gas, and determining a pressure inside the chamber based on a rate of detected movements of the ion.
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公开(公告)号：US20200373917A1
公开(公告)日：2020-11-26
申请号：US16990108
申请日：2020-08-11
Applicant: IONQ, INC.
Inventor： Shantanu DEBNATH , Jason M. AMINI , Jwo-Sy CHEN , Neal PISENTI
IPC: H03K3/38 , G06N10/00 , H03K19/195
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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