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公开(公告)号：US20240296360A1
公开(公告)日：2024-09-05
申请号：US17464595
申请日：2021-09-01
Applicant: IONQ, INC.
Inventor： Reinhold BLUMEL , Nikodem GRZESIAK , Ming LI , Andrii MAKSYMOV , Yunseong NAM
Abstract: A method for performing an entangling operation between trapped ions in a quantum computer includes selecting an amount of infidelity that is allowed in an entangling operation between two trapped ions in a quantum computer, computing a pulse function of a pulse to be applied to each of the two trapped ions based on gate operation conditions and the selected amount of infidelity, generating the pulse based on the computed pulse function, and applying the generated pulse to each of the two trapped ions to perform the entangling operation between the two trapped ions.
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公开(公告)号：US20240062087A1
公开(公告)日：2024-02-22
申请号：US18458783
申请日：2023-08-30
Applicant: IonQ, Inc.
Inventor： Vandiver CHAPLIN , Yunseong NAM
CPC classification number: G06N10/00 , G06F9/3885 , G06F8/443
Abstract: A system and method is provided for optimizing an input quantum circuit. An exemplary method includes searching a library of templates to find, by compiling abstract gate operations into a set of hardware-specific operations that manipulate qubit states, a template of quantum circuit gates that performs a predetermined function and that matches a set of quantum circuit gates in the input quantum circuit that performs the predetermined function; and replacing the set of quantum circuit gates in the input quantum circuit with the template of quantum circuit gates when the template of quantum circuit gates has a lower quantum cost than the set of quantum circuit gates based on estimated execution times. Moreover, the method is executed in a pipeline in combination with at least quantum circuit compilation.
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公开(公告)号：US20240013078A1
公开(公告)日：2024-01-11
申请号：US18369327
申请日：2023-09-18
Applicant: IONQ, INC. , University of Maryland, College Park
Inventor： Pradeep NIROULA , Yunseong NAM
CPC classification number: G06N10/00 , G06F9/30032 , G06F9/30101
Abstract: A method of determining a pattern in a sequence of bits using a quantum computing system includes setting a first register of a quantum processor in a superposition of a plurality of string index states, encoding a bit string in a second register of the quantum processor, encoding a bit pattern in a third register of the quantum processor, circularly shifting qubits of the second register conditioned on the first register, amplifying an amplitude of a state combined with the first register in which the circularly shifted qubits of the second register matches qubits of the third register, measuring an amplitude of the first register and determining a string index state of the plurality of string index states associated with the amplified state, and outputting, by use of a classical computer, a string index associated with the first register in the measured state.
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公开(公告)号：US20230401478A1
公开(公告)日：2023-12-14
申请号：US17971458
申请日：2022-10-21
Applicant: IONQ, INC.
Inventor： Reinhold BLÜMEL , Nikodem GRZESIAK , Ming LI , Andrii MAKSYMOV , Yunseong NAM
IPC: G06N10/60
CPC classification number: G06N10/60
Abstract: A method for performing at least a portion of a computational process includes computing a pulse function of a pulse to be applied to a first pair of trapped ions in a first ion chain based on a phase-space condition, wherein the phase-space condition is derived using equi-spaced synthetic frequencies in a frequency interval that includes a range set by a highest and a lowest motional mode frequency of the first ion chain, generating the pulse based on the computed pulse function, and applying the generated pulse to each of a second pair of trapped ions in a second ion chain to perform an entangling gate operation between the second pair of trapped ions in the second ion chain.
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公开(公告)号：US20220284334A1
公开(公告)日：2022-09-08
申请号：US17746453
申请日：2022-05-17
Applicant: IONQ, INC.
Inventor： Yunseong NAM , Reinhold BLUMEL , Nikodem GRZESIAK
Abstract: A method of performing simultaneous entangling gate operations in a trapped-ion quantum computer includes selecting a gate duration value and a detuning frequency of pulses to be individually applied to a plurality of participating ions in a chain of trapped ions to simultaneously entangle a plurality of pairs of ions among the plurality of participating ions by one or more predetermined values of entanglement interaction, determining amplitudes of the pulses, based on the selected gate duration value, the selected detuning frequency, and the frequencies of the motional modes of the chain of trapped ions, generating the pulses having the determined amplitudes, and applying the generated pulses to the plurality of participating ions for the selected gate duration value. Each of the trapped ions in the chain 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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Patent Agency Ranking
16.发明申请公开(公告)号：US20210233617A1
公开(公告)日：2021-07-29
申请号：US17162566
申请日：2021-01-29
Applicant: IONQ, INC.
Inventor： Pradeep NIROULA , Wengang ZHANG , Yunseong NAM
Abstract: A method of performing computation using a hybrid quantum-classical computing system comprising a classical computer and a quantum processor includes computing, by use of a classical computer, short-range inter-particle interaction energies and self-energies of a group of interacting particles, transforming the quantum processor from an initial state to a charge-position encoded state, applying Quantum Fourier transformation to the quantum processor, measuring an estimated amplitude of the Fourier transformed superposition state on the quantum processor, computing long-range inter-particle interaction energies based on the measured estimated amplitude of the Fourier transformed superposition state, and computing and outputting a sum of the short-range inter-particle interaction energies, the self-energies of the system, and the long-range inter-particle interaction energies as a total inter-particle interaction energies of the system.
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公开(公告)号：US20200372391A1
公开(公告)日：2020-11-26
申请号：US16854033
申请日：2020-04-21
Applicant: IONQ, INC.
Inventor： Yunseong NAM , Reinhold BLUMEL , Nikodem GRZESIAK
Abstract: A method of performing a computation using a quantum computer includes generating a first laser pulse and a second laser pulse to cause entanglement interaction between 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 plurality of trapped ions having two frequency-separated states defining a qubit, and applying the generated first laser pulse to the first trapped ion and the generated second laser pulse to the second trapped ion. Generating the first laser pulse and the second laser pulse includes stabilizing the entanglement interaction between the first and second trapped ions against fluctuations in frequencies of collective motional modes of the plurality of trapped ions in a second direction that is perpendicular to the first direction.
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公开(公告)号：US20200184024A1
公开(公告)日：2020-06-11
申请号：US16678835
申请日：2019-11-08
Applicant: IonQ, Inc. , Duke University
Inventor： Yunseong NAM , Dmitri MASLOV , Jungsang KIM , Ken BROWN
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：US20240403678A1
公开(公告)日：2024-12-05
申请号：US17477148
申请日：2021-09-16
Applicant: IONQ, INC.
Inventor： Ming LI , Kenneth WRIGHT , Neal C. PISENTI , Kristin Marie BECK , Jason Hieu Van NGUYEN , Yunseong NAM
Abstract: A method of performing a quantum gate operation in an ion trap quantum computing system includes identifying one or more error mechanisms that cause a quantum computational error in a quantum gate operation on a first trapped ion of an ion chain comprising a plurality of trapped ions, wherein the quantum gate operation is performed by applying a first Raman laser beam and a second Raman laser beam, computing a first amplitude of the first Raman laser beam, and a second amplitude of the second Raman laser beam such that the effect of the identified one or more error mechanisms is accounted for, and applying the first Raman laser beam having the computed first amplitude and the second Raman laser beam having the computed second amplitude on the first trapped ion to perform the quantum gate operation on the first trapped ion.
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公开(公告)号：US20240127102A1
公开(公告)日：2024-04-18
申请号：US18172227
申请日：2023-02-21
Applicant: IonQ, Inc.
Inventor： Andrii MAKSYMOV , Jason Hieu Van NGUYEN , Igor Leonidovich MARKOV , Yunseong NAM
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 computational symmetries for error mitigation in quantum computations in QIP systems.
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