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公开(公告)号：US20220131707A1
公开(公告)日：2022-04-28
申请号：US17570971
申请日：2022-01-07
Inventor： Yuao CHEN , Runyao DUAN , Lijing JIN
IPC: H04L9/32
Abstract: A digital signature method, a signature information verification method, a related apparatus and an electronic device are provided. The digital signature method includes: obtaining a to-be-sent file and a private key used by a first electronic device for digital signature, the private key including a first invertible matrix; generating L second tensors based on the first invertible matrix and a first tensor, the L second tensors including the first tensor and a tensor isomorphic to the first tensor; digitally signing the to-be-sent file based on a second invertible matrix and the first tensor, to obtain a first character string; constructing a hash value of a root node of a hash tree based on the L second tensors; generating signature information of the to-be-sent file based on the first character string, the first invertible matrix, the second invertible matrix, the L second tensors and the hash value of the root node.
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公开(公告)号：US20240049609A1
公开(公告)日：2024-02-08
申请号：US18126035
申请日：2023-03-24
Inventor： Feiyu LI , Lijing JIN
CPC classification number: H10N60/805 , H10N60/12
Abstract: Provided is a coupling component applied to a quantum chip, a quantum chip and a quantum computing device. The coupling component includes a first electrode plate and a second electrode plate. The first electrode plate includes a first coupling port and a second coupling port. The second electrode plate includes a third coupling port and a fourth coupling port. At least one of the following conditions is satisfied: a first coupling strength formed by coupling the first coupling port with a first qubit is different from a second coupling strength formed by coupling the second coupling port with a second qubit, and a third coupling strength formed by coupling the third coupling port with the first qubit is different from a fourth coupling strength formed by coupling the fourth coupling port with the second qubit.
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公开(公告)号：US20230359914A1
公开(公告)日：2023-11-09
申请号：US18222877
申请日：2023-07-17
Inventor： Peng JIA , Zhengyi CUI , Lijing JIN
Abstract: A method is provided that includes: determining a frequency range of a reading device, and corresponding quality factors of reading cavities and filters; determining frequency ranges of the reading cavities and filters based on the frequency range of the reading device; determining a frequency of each reading cavity and filter based on the frequency ranges of the reading cavity and filter and the corresponding quality factors; determining a length of each reading cavity and a length of each filter respectively, such that a difference value between its frequency and a determined frequency does not exceed a first threshold; determining a spacing and a coupling length between the reading cavities and the filters to make it close to a preset quality factor; and performing simulation verification on a layout of a superconducting quantum chip based on the lengths, spacing and coupling length of the reading cavities and the filters.
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公开(公告)号：US20240046130A1
公开(公告)日：2024-02-08
申请号：US18193909
申请日：2023-03-31
Inventor： Lijing JIN , Yuxuan WANG
IPC: G06N10/20 , G06N10/40 , G06F30/392
CPC classification number: G06N10/20 , G06N10/40 , G06F30/392
Abstract: Provided is a simulation method, an electronic device and a storage medium, relating to the field of computer and in particular to the field of quantum computer and quantum simulation. The simulation method can includes obtaining first frequency information of a first target device among at least two devices of a quantum chip layout through simulation, and obtaining second frequency information of a second target device among the at least two devices through simulation; and obtaining a coupling strength between the first target device and the second target device among the at least two devices based on the first frequency information and the second frequency information.
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Patent Agency Ranking
公开(公告)号：US20230021319A1
公开(公告)日：2023-01-26
申请号：US17894607
申请日：2022-08-24
Inventor： Lijing JIN , Boyan YU
IPC: G06N10/40
Abstract: A method for routing wires on a chain quantum chip is provided. The method may include: encoding, according to a corresponding relationship between multiple pins of a chain quantum chip and inlets of multiple qubits on a qubit chain, the multiple pins and multiple inlets respectively, where the multiple pins include multiple first pins parallel to an extending direction of the qubit chain; determining and connecting a first inlet with a first target pin, where a distance between an abscissa of the first inlet and an abscissa of the first target pin satisfies a first preset condition; and connecting, according to codes of remaining inlets and codes of remaining pins, the remaining inlets with the remaining pins in a one-to-one correspondence.
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公开(公告)号：US20220076154A1
公开(公告)日：2022-03-10
申请号：US17454960
申请日：2021-11-15
Inventor： Xin WANG , Lijing JIN , Shusen LIU , Zelin MENG , Zixian YAN
IPC: G06N10/00
Abstract: A control pulse generation method, a system, a device and a storage medium are provided, which are related to the field of quantum computing. The method includes: acquiring a system Hamiltonian; acquiring an initial control pulse of a quantum logic gate included in a parameterized quantum circuit to obtain an initial pulse sequence for a gate sequence formed for all the quantum logic gates in the parameterized quantum circuit, which is obtained through simulation based on the system Hamiltonian; acquiring system state information of the quantum system obtained after applying the initial pulse sequence to the target quantum hardware device; adjusting a parameter of the parameterized quantum circuit based on a relationship between the system state information and target state information needed to be achieved by the target quantum control task, to adjust a pulse parameter of the initial pulse sequence to obtain a target pulse sequence.
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公开(公告)号：US20240046140A1
公开(公告)日：2024-02-08
申请号：US18193916
申请日：2023-03-31
Inventor： Yuxuan WANG , Lijing JIN
Abstract: Provided is a simulation method, electronic device, and storage medium relating to the field quantum computers and quantum simulation. The simulation method can include obtaining a first normal mode frequency of a first target device with adjustable frequency among at least two devices of a quantum chip layout through simulation; determining resonance-related information of the first target device and a second target device in a resonant state among the at least two devices; where the second target device is a device with adjustable or non-adjustable frequency among the at least two devices; and obtaining a target coupling strength between the first and second target devices based on the first normal mode frequency of the first target device and the resonance-related information.
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公开(公告)号：US20230186137A1
公开(公告)日：2023-06-15
申请号：US18164334
申请日：2023-02-03
Inventor： Xin WANG , Lijing JIN , Zhan YU , Chenghong ZHU , Xuanqiang ZHAO
Abstract: The present disclosure provides a quantum circuit processing method and a quantum circuit processing device on a quantum chip, and an electronic device, and it relates to the field of quantum computing technology, in particular to the field of quantum circuit technology. The method includes: obtaining a first swap fidelity for measuring connectivity of the quantum chip, the first swap fidelity being determined in accordance with first information, the first information being used to represent a topological structure of the quantum chip, the topological structure indicating that the quantum chip includes at least two physical quantum bits, the first swap fidelity being used to represent an average state maintenance level of logic quantum bits obtained through analog exchanging quantum states of any two of the physical quantum bits; and performing quantum circuit processing on the quantum chip in accordance with the first swap fidelity.
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公开(公告)号：US20220027774A1
公开(公告)日：2022-01-27
申请号：US17450157
申请日：2021-10-06
Inventor： Lijing JIN , Xin WANG , Runze ZHANG , Zelin MENG
Abstract: A quantum control pulse generation method, a device, and a storage medium are provided, which are related to the field of quantum computation. The method includes: constructing, based on relevant physical parameters of a target quantum hardware structure, a system Hamiltonian of a quantum system characterized by the target quantum hardware structure; obtaining an initial control pulse set matching the target quantum hardware structure; obtaining, based on the system Hamiltonian, system state information of the quantum system by simulation; and optimizing the initial control pulse in the initial control pulse set based on at least a relationship between the system state information of the quantum system and target state information that needs to be achieved by the target quantum task, to obtain a target control pulse sequence by simulation.
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