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1. 发明申请

US20230132301A1 CORRECTION OF LIGHT-SHIFT EFFECTS IN TRAPPED-ION QUANTUM GATES 有权
公开(公告)号：US20230132301A1
公开(公告)日：2023-04-27
申请号：US18048300
申请日：2022-10-20
申请人： IonQ, Inc.
发明人： Shantanu DEBNATH , Vandiver CHAPLIN
IPC分类号： G01N21/65 , G06N10/40
摘要： 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 correction of light-shift effects in trapped-ion quantum gates. Techniques are described for light-shift correction of single qubit gates when the gates are implemented using counter-propagating Raman laser beams and when the gates are implemented using co-propagating Raman laser beams. Moreover, techniques are also described for light-shift correction of two-qubit gates.

2. 发明申请

US20230051669A1 SYSTEM AND METHOD FOR QUANTUM COMPUTING TO GENERATE JOINT PROBABILITY DISTRIBUTIONS 有权
公开(公告)号：US20230051669A1
公开(公告)日：2023-02-16
申请号：US17888077
申请日：2022-08-15
申请人： IonQ, Inc.
发明人： Sonika JOHRI , David BACON
IPC分类号： G06N10/20 , G06N10/60
摘要： 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 computation of joint probability distributions with quantum computers. Improvements in the computation of joint probability distributions are described by designing quantum machine learning algorithms to model copulas. Moreover, any copula is shown to be naturally mapped to a multipartite maximally entangled state. A variational ansatz referred to herein as a “qopula” creates arbitrary correlations between variables while maintaining the copula structure starting from a set of Bell pairs for two variables, or Greenberger-Horne-Zeilinger (GHZ) states for multiple variables. Generative learning algorithms may be demonstrated on quantum computers, and more particularly, in trapped-ion quantum computers. The approach described herein is shown to have advantages over classical models.

3. 发明申请

US20230037180A1 NOISE REDUCED CIRCUITS FOR TRAPPED-ION QUANTUM COMPUTERS 有权
公开(公告)号：US20230037180A1
公开(公告)日：2023-02-02
申请号：US17881240
申请日：2022-08-04
申请人： IONQ, INC.
发明人： Omar SHEHAB , Isaac Hyun KIM
IPC分类号： G06N10/00 , G06E3/00
摘要： Embodiments described herein are generally related to a method and a system for performing a computation using a hybrid quantum-classical computing system, and, more specifically, to providing an approximate solution to an optimization problem using a hybrid quantum-classical computing system that includes a group of trapped ions. A hybrid quantum-classical computing system that is able to provide a solution to a combinatorial optimization problem may include a classical computer, a system controller, and a quantum processor. The methods and systems described herein include an efficient and noise resilient method for constructing trial states in the quantum processor in solving a problem in a hybrid quantum-classical computing system, which provides improvement over the conventional method for computation in a hybrid quantum-classical computing system.

4. 发明申请

US20230024811A1 METHODS AND APPARATUSES FOR ELECTROMAGNETICALLY-INDUCED TRANSPARENCY COOLING IN AN ISOTOPE WITH A NUCLEAR SPIN OF 3/2 OR GREATER 有权
公开(公告)号：US20230024811A1
公开(公告)日：2023-01-26
申请号：US17934421
申请日：2022-09-22
申请人： IonQ, Inc.
发明人： Michael Lurie GOLDMAN , Jonathan Albert MIZRAHI , Jeremy Matthew SAGE
IPC分类号： G06N10/40 , G06F1/20
摘要： Aspects of the present disclosure may include a method and/or a system for identifying an ion chain having a plurality of trapped ions, selecting at least two non-consecutive trapped ions in the ion chain for implementing a qubit, applying at least a first Raman beam to shuttle at least one neighbor ion of the at least two non-consecutive trapped ions from a ground state to a metastable state, and applying at least a second Raman beam to one or more of the at least two non-consecutive trapped ions, after shuttling the at least one neighbor ion to the metastable state, to transition from a first manifold to a second manifold.

5. 发明授权

US11562277B2 Use of global interactions in efficient quantum circuit constructions 有权
公开(公告)号：US11562277B2
公开(公告)日：2023-01-24
申请号：US16234112
申请日：2018-12-27
申请人： University of Maryland, College Park , IonQ, Inc.
发明人： Yunseong Nam , Dmitri Maslov
IPC分类号： G06N10/00 , G06F17/14 , G06F15/80
摘要： The disclosure describes various aspects of techniques for using global interactions in efficient quantum circuit constructions. More specifically, this disclosure describes ways to use a global entangling operator to efficiently implement circuitry common to a selection of important quantum algorithms. The circuits may be constructed with global Ising entangling gates (e.g., global Mølmer-Sørenson gates or GMS gates) and arbitrary addressable single-qubit gates. Examples of the types of circuits that can be implemented include stabilizer circuits, Toffoli-4 gates, Toffoli-n gates, quantum Fourier transformation (QTF) circuits, and quantum Fourier adder (QFA) circuits. In certain instances, the use of global operations can substantially improve the entangling gate count.

6. 发明申请

US20220383179A1 DEBUGGING OF QUANTUM CIRCUITS 有权
公开(公告)号：US20220383179A1
公开(公告)日：2022-12-01
申请号：US17746871
申请日：2022-05-17
申请人： IONQ, INC.
发明人： Andrii MAKSYMOV , Jason Hieu Van NGUYEN , Igor Leonidovich MARKOV , Yunseong NAM
IPC分类号： G06N10/60 , G06F7/57
摘要： A method of performing computation using a hybrid quantum-classical computing system including a classical computer, a system controller, and a quantum processor includes identifying a computational problem to be solved and a quantum algorithm to be used to solve the computational problem, detecting one or more faulty two-qubit gates among a plurality of two-qubit gates that can be applied to pairs of qubits in the quantum processor, compiling a computational task to solve the computational problem based on the quantum algorithm into a series of logic gates, including single-qubit gates and two-qubit gates that exclude the detected one or more faulty two-qubit gates, executing the series of logic gates on the quantum processor, measuring one or more of the qubits in the quantum processor, and outputting a solution to the identified computational problem derived from the measured results of the one or more of the qubits in the quantum processor.

7. 发明授权

US11455563B2 Noise reduced circuits for trapped-ion quantum computers 有权
公开(公告)号：US11455563B2
公开(公告)日：2022-09-27
申请号：US16578142
申请日：2019-09-20
申请人： IONQ, INC.
发明人： Omar Shehab , Isaac Hyun Kim
IPC分类号： G06N10/00 , G06E3/00
摘要： Embodiments described herein are generally related to a method and a system for performing a computation using a hybrid quantum-classical computing system, and, more specifically, to providing an approximate solution to an optimization problem using a hybrid quantum-classical computing system that includes a group of trapped ions. A hybrid quantum-classical computing system that is able to provide a solution to a combinatorial optimization problem may include a classical computer, a system controller, and a quantum processor. The methods and systems described herein include an efficient and noise resilient method for constructing trial states in the quantum processor in solving a problem in a hybrid quantum-classical computing system, which provides improvement over the conventional method for computation in a hybrid quantum-classical computing system.

8. 发明申请

US20220260860A1 SCALABLE AND PROGRAMMABLE COHERENT WAVEFORM GENERATORS 有权
公开(公告)号：US20220260860A1
公开(公告)日：2022-08-18
申请号：US17738775
申请日：2022-05-06
申请人： IonQ, Inc.
发明人： Joel Zvi APISDORF , James Michael WILLIAMS , Phillip Douglas SOLOMON , Jason Madjdi AMINI
IPC分类号： G02F1/017 , G06N10/00 , G02F7/00 , G06F1/10
摘要： The disclosure describes various aspects of a system with scalable and programmable coherent waveform generators. A network and digital-to-analog conversion (DAC) cards used by the network are described where each DAC card has a clock divider/replicator device with an input SYNC pin, a digital logic component, and one or more DAC components, and each output of the DAC components is used to control optical beams for a separate qubit of a quantum information processing (QIP) system. The network also includes a first distribution network to provide a clock signal to the clock divider/replicator device in the DAC cards, and a second distribution network to provide a start signal to the DAC cards, where the start signal is used by the digital logic component in the DAC card to assert the input SYNC pin when the start signal is asserted unless it is masked by the digital logic component.

9. 发明申请

US20220206866A1 OPTIMAL CALIBRATION OF GATES IN A QUANTUM COMPUTING SYSTEM 有权
公开(公告)号：US20220206866A1
公开(公告)日：2022-06-30
申请号：US17531520
申请日：2021-11-19
申请人： IONQ, INC. , University of Maryland
发明人： Andrii MAKSYMOV , Pradeep NIROULA , Yunseong NAM
IPC分类号： G06F9/50 , G06N10/20 , G06N10/40
摘要： A method of performing a quantum computation process includes mapping, by a classical computer, logical qubits to physical qubits of a quantum processor so that quantum circuits are executable using the physical qubits of the quantum processor and a total infidelity of the plurality of quantum circuits is minimized, wherein each of the physical qubits comprise a trapped ion, and each of the plurality of quantum circuits comprises single-qubit gates and two-qubit gates within the plurality of the logical qubits, calibrating, by a system controller, two-qubit gates within a first plurality of pairs of physical qubits, such that infidelity of the two-qubit gates within the first plurality of pairs of physical qubit is lowered, executing the plurality of quantum circuits on the quantum processor, by applying laser pulses that each cause a single-qubit gate operation and a two-qubit gate operation in each of the plurality of quantum circuits on the plurality of physical qubits, measuring, by the system controller, population of qubit states of the physical qubits in the quantum processor after executing the plurality of quantum circuits on the quantum processor, and outputting, by the classical computer, the measured population of qubit states of the physical qubits as a result of the execution the plurality quantum circuits, wherein the result of the execution the plurality quantum circuits are configured to be displayed on a user interface, stored in a memory of the classical computer, or transferred to another computational device.

10. 发明授权

US11367010B2 Quantum computer simulator characterization 有权
公开(公告)号：US11367010B2
公开(公告)日：2022-06-21
申请号：US16401585
申请日：2019-05-02
申请人： IonQ, Inc.
发明人： Andrew Maps Ducore , Yunseong Nam , Omar Shehab , Matthew Joseph Keesan , Stewart O. Allen
IPC分类号： G06N10/00 , G06F8/41 , G06F30/20
摘要： The disclosure describes various aspects of quantum computer simulators. In an aspect, a method for characterizing a quantum computer simulator includes identifying simulator processes supported by the quantum computer simulator, generating, for each simulator process, characteristic curves for different gates or quantum operations, the characteristic curves including information for predicting the time it takes to simulate each of the gates or quantum operations in a respective simulator process, and providing the characteristic curves to select one of the simulator processes to simulate a circuit, quantum program, or quantum algorithm that uses at least some of the gates or quantum operations. In another aspect, a method for optimizing simulations in a quantum computer simulator is described where a simulator process is selected for simulation of a circuit, quantum program, or quantum algorithm based on characteristic curves that predict a time it takes for the simulation to be carried out.

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