-
公开(公告)号：US20240062093A1
公开(公告)日：2024-02-22
申请号：US18447242
申请日：2023-08-09
Inventor： Xin WANG , Chenghong ZHU , Xuanqiang ZHAO
Abstract: A method is provided that includes: determining auxiliary qubits and a quantum state ρ on which a preset quantum operation is to be performed; modeling quantum noise in the quantum operation to obtain a quantum noise channel corresponding to the quantum operation; initializing an encoding circuit to be trained, where the encoding circuit includes an adjustable parameter and is configured to act on the quantum state ρ and the auxiliary qubits; defining an expression of first mapping, where a result obtained after the first mapping, the quantum noise channel, and the encoding circuit are connected in series is close to an identity channel within a preset error tolerance range; adjusting a value of the adjustable parameter of the encoding circuit to determine the first mapping; and determining, based on the trained encoding circuit and the first mapping, an unbiased estimate of a quantum operation result obtained after canceling quantum noise.
-
公开(公告)号：US20230021555A1
公开(公告)日：2023-01-26
申请号：US17945975
申请日：2022-09-15
Inventor： Xin WANG , Guangxi LI , Xuanqiang ZHAO
IPC: G06N10/60
Abstract: A method includes: obtaining training texts; for each of the training texts, performing the following operations: obtaining a word vector of each word in the current training text as a parameter of a first quantum circuit to obtain quantum states; inputting each of the quantum states to second, third, and fourth quantum circuits and performing measurement; calculating one group of weight values corresponding to each word to obtain a feature vector corresponding to the current training text; inputting the feature vector to a neural network model to obtain a prediction value; and determining a value of loss function based on the prediction value and a label value, and adjusting parameters corresponding to the second, third, and fourth quantum circuits and the neural network model based on the value of the loss function.
-
公开(公告)号：US20220222507A1
公开(公告)日：2022-07-14
申请号：US17712640
申请日：2022-04-04
Inventor： Xin WANG , Sizhuo YU , Zhixin SONG , Xuanqiang ZHAO
Abstract: A method is provided, including: initializing a first quantum neural network to be trained and at least two second quantum neural networks to be trained, and obtaining a quantum state training set; identifying one or more qubit pairs in an entangled state shared by the two parties; for each of a plurality of quantum state combinations: inputting quantum states of the quantum state combination into the respectively corresponding first quantum neural network, and measuring qubits output by the first quantum neutral network and not input into each of the at least two second quantum neural networks of each party so as to obtain a corresponding quantum state; selectively running a second quantum neural network respectively according to a measuring result so as to obtain quantum state output by the two parties, to compute a loss function; and adjusting a parameter value to make the loss function reach a minimum value.
-
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.
-
公开(公告)号：US20230267357A1
公开(公告)日：2023-08-24
申请号：US17902311
申请日：2022-09-02
Inventor： Xin WANG , Xuanqiang ZHAO , Zhan YU
IPC: G06N10/20
CPC classification number: G06N10/20
Abstract: Provided are a simulation method of a quantum system, a computing device, and a storage medium relating to the field of data processing, and in particular to the field of quantum computing. The method includes: acquiring at least two measurement results; calculating a loss value of a loss function representing an average trace distance; and taking, in the case where the loss value of the loss function satisfies an iteration requirement, a preset parameterized quantum circuit with an adjustable parameter at a first parameter value as a target parameterized quantum circuit.
-
Patent Agency Ranking
公开(公告)号：US20230244974A1
公开(公告)日：2023-08-03
申请号：US17929575
申请日：2022-09-02
Abstract: A quantum state processing method, a computing device and a storage medium. The method includes: acquiring a first group of measurement results for a first quantum state ρ, the first group of measurement results including a measurement result for the first quantum state ρ and a measurement result for an approximate n-order quantum state ρ[n]; acquiring a second group of measurement results for a second quantum state σ, the second group of measurement results including a measurement result for the second quantum state σ and a measurement result for an approximate m-order quantum state σ[m]; obtaining, based on at least the first group of measurement results and the second group of measurement results, a target high-order inner product tr(ρnσm) for the first quantum state ρ and the second quantum state σ; and the ρn characterizing an n-order quantum state of the first quantum state σ.
-
公开(公告)号：US20230153674A1
公开(公告)日：2023-05-18
申请号：US18094304
申请日：2023-01-06
Inventor： Xin WANG , Xuanqiang ZHAO
Abstract: A method is provided. The method includes: determining m first parameterized quantum circuits and a second parameterized quantum circuit of an m-dimensional quantum system; obtaining m first quantum states obtained after the first parameterized quantum circuits act on an initial quantum state and m second quantum states obtained after the quantum channel acts on the m first quantum states; obtaining a quantum state matrix obtained after the second parameterized quantum circuit acts on the initial quantum state, where diagonal elements of the matrix correspond to the first quantum states to constitute an ensemble; optimizing parameters of the parameterized quantum circuits by minimizing a loss function, where the loss function is determined based on Holevo information of the quantum channel at the current ensemble; and determining the Holevo information, obtained after the optimization, of the quantum channel as an estimated value of the classical capacity of the quantum channel.
-
公开(公告)号：US20220036230A1
公开(公告)日：2022-02-03
申请号：US17501755
申请日：2021-10-14
Inventor： Xin WANG , Xuanqiang Zhao , Benchi Zhao , Zihe Wang , Zhixin Song , Renyu Liu
IPC: G06N10/00
Abstract: A quantum entangled state processing method, a device, and a storage medium are provided, which are related to a field of quantum calculation. The specific implementation scheme includes: determining n initial quantum states to be processed; determining at least two nodes associated with the initial quantum state; acquiring at least one first parameterized quantum circuit required by the first node and at least one second parameterized quantum circuit required by the second node matched with a preset processing scenario; controlling, based on an initial quantum operation strategy, the first node to perform a local quantum operation to obtain a first measurement result, controlling the second node to perform a local quantum operation to obtain a second measurement result; obtaining an output quantum state meeting a preset requirement of the preset processing scenario at least based on the first measurement result and the second measurement result.
-
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.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.028 seconds)
