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21.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：US20220198105A1
公开(公告)日：2022-06-23
申请号：US17531366
申请日：2021-11-19
Applicant: IONQ, INC. , University of Maryland
Inventor： Pradeep NIROULA , Wengang ZHANG , Yunseong NAM
Abstract: A method of performing a computational process includes transforming, a first register of a quantum processor to a charge encoded state in which charges of interacting particles to be simulated are encoded, transforming a second register of the quantum processor to a position encoded state in which positions of the interacting particles are encoded, performing a first phase shift operation, including shifting a phase of the first and second registers by kinetic energies of the interacting particles, performing a second phase shift operation, including shifting the phase of the first and second registers by pair-wise Coulomb potential energies of the interacting particles, measuring the phase of the first and second registers, transmitting the measured phase of the first and second registers to a classical computer, and the measured phase including a sum of the kinetic energies and the pair-wise Coulomb potential energies of the interacting particles.
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公开(公告)号：US20220156627A1
公开(公告)日：2022-05-19
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：US20220101169A1
公开(公告)日：2022-03-31
申请号：US17490769
申请日：2021-09-30
Applicant: IONQ, INC.
Inventor： Yunseong NAM
IPC: G06N10/00
Abstract: A method of performing a computation using a quantum computer includes converting, by a classical computer, a first quantum circuit to a second quantum circuit, wherein the first quantum circuit comprises a conventional gate set and the second quantum circuit comprises a standard trapped-ion gate set, generating a first optimized quantum circuit, which comprises the standard trapped-ion gate set, by adjusting the second quantum circuit, by use of the classical computer, converting, by the classical computer, the first optimized quantum circuit to a third quantum circuit comprising a phase-insensitive trapped-ion gate set, generating a second optimized quantum circuit comprising the phase-insensitive trapped-ion gate set, by adjusting the third quantum circuit, by use of the classical computer, and applying the first and the second optimized quantum circuit on a quantum computer to perform a computation.
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25.发明申请公开(公告)号：US20220067565A1
公开(公告)日：2022-03-03
申请号：US17458109
申请日：2021-08-26
Applicant: IONQ, INC.
Inventor： Reinhold BLUMEL , Nikodem GRZESIAK , Yunseong NAM
Abstract: A method of performing a computation using an ion trap quantum computer includes computing a detuning frequency function and an amplitude function of a laser pulse to cause entangling interaction between a pair of trapped ions of a plurality of trapped ions, each of the plurality of trapped ions having two frequency-separated states defining a qubit, splining the computed detuning frequency function of the laser pulse, modifying the computed amplitude function of the laser pulse based on the splined detuning frequency function, and applying a modified laser pulse having the splined detuning frequency function and the modified amplitude function to each trapped ion in the pair of trapped ions.
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Patent Agency Ranking
公开(公告)号：US20210192113A1
公开(公告)日：2021-06-24
申请号：US17165707
申请日：2021-02-02
Applicant: UNIVERSITY OF MARYLAND, COLLEGE PARK , IonQ, Inc.
Inventor： Yunseong NAM , Dmitri MASLOV , Andrew CHILDS , Neil Julien ROSS , Yuan SU
IPC: G06F30/327 , G06F30/39 , G06N10/00
Abstract: The disclosure describes the implementation of automated techniques for optimizing quantum circuits of the size and type expected in quantum computations that outperform classical computers. The disclosure shows how to handle continuous gate parameters and report a collection of fast algorithms capable of optimizing large-scale-scale quantum circuits. For the suite of benchmarks considered, the techniques described obtain substantial reductions in gate counts. In particular, the techniques in this disclosure provide better optimization in significantly less time than previous approaches, while making minimal structural changes so as to preserve the basic layout of the underlying quantum algorithms. The results provided by these techniques help bridge the gap between computations that can be run on existing quantum computing hardware and more advanced computations that are more challenging to implement in quantum computing hardware but are the ones that are expected to outperform what can be achieved with classical computers.
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27.发明申请公开(公告)号：US20200369517A1
公开(公告)日：2020-11-26
申请号：US16578134
申请日：2019-09-20
Applicant: IONQ, INC.
Inventor： Yunseong NAM , Reinhold BLUMEL , Nikodem GRZESIAK
Abstract: A method of performing an entangling operation between two trapped ions in a quantum computer includes selecting a gate duration value of a pulse to be applied to a first ion and a second ion in a chain of trapped ions, determining one or more tones of the pulse, each tone comprising an amplitude value and a detuning frequency value, based on the selected gate duration value and frequencies of the motional modes of the chain of trapped ions, generating the pulse having the one or more tones, each tone comprising the determined amplitude and the determined detuning frequency values, and applying the generated pulse to the first and second ions for the gate duration value. Each of the trapped ions has two frequency-separated states defining a qubit, and motional modes of the chain of trapped ions each have a distinct frequency.
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公开(公告)号：US20190164076A1
公开(公告)日：2019-05-30
申请号：US16199993
申请日：2018-11-26
Applicant: 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 computer and an expandable/modular quantum computer are described. Also described are at least a software-defined quantum architecture, a resource manager workflow, a quantum compiler architecture, hardware description language configuration, levels of application programming interface (API) access points, and exception handling in software-defined quantum architecture.
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公开(公告)号：US20190121921A1
公开(公告)日：2019-04-25
申请号：US16164586
申请日：2018-10-18
Applicant: University of Maryland, College Park , IonQ Inc.
Inventor： Yunseong NAM , Dmitri MASLOV , Andrew CHILDS , Neil Julien ROSS , Yuan SU
Abstract: The disclosure describes the implementation of automated techniques for optimizing quantum circuits of the size and type expected in quantum computations that outperform classical computers. The disclosure shows how to handle continuous gate parameters and report a collection of fast algorithms capable of optimizing large-scale-scale quantum circuits. For the suite of benchmarks considered, the techniques described obtain substantial reductions in gate counts. In particular, the techniques in this disclosure provide better optimization in significantly less time than previous approaches, while making minimal structural changes so as to preserve the basic layout of the underlying quantum algorithms. The results provided by these techniques help bridge the gap between computations that can be run on existing quantum computing hardware and more advanced computations that are more challenging to implement in quantum computing hardware but are the ones that are expected to outperform what can be achieved with classical computers.
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30.发明公开公开(公告)号：US20240249040A1
公开(公告)日：2024-07-25
申请号：US18483261
申请日：2023-10-09
Applicant: IonQ, Inc.
Inventor： Yunseong NAM , Dmitri MASLOV
CPC classification number: G06F30/20 , G06F11/004 , G06N10/00 , G06N10/60 , G06N10/40
Abstract: The disclosure describes various aspects of techniques for optimal fault-tolerant implementations of controlled-Zα gates and Heisenberg interactions. Improvements in the implementation of the controlled-Zα gate can be made by using a clean ancilla and in-circuit measurement. Various examples are described that depend on whether the implementation is with or without measurement and feedforward. The implementation of the Heisenberg interaction can leverage the improved controlled-Zα gate implementation. These implementations can cut down significantly the implementation costs associated with fault-tolerant quantum computing systems.
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