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1.发明专利
公开(公告)号：AU2022200187A1
公开(公告)日：2022-09-29
申请号：AU2022200187
申请日：2022-01-13
Abstract: Abstract A method includes: determining a maximum number Z of times for executing a measuring device continuously; operating the quantum computer to perform, for each integer k in a set {0, 1, ... , K} comprising Z integers, M 1 quantum computation processes to generate, for each quantum computation process, of the M1 quantum computation processes, an intermediate measurement result, wherein, in each quantum computation process, the quantum computer is operated to generate an n-qubit quantum state p, and continuously execute the measuring device for k + 1 times, so as to obtain the intermediate measurement result of the quantum computation process; operating a classical computer to compute an average measurement result of the M1 quantum computation processes; and operating the classical computer to determine, by means of Neumann series based on the average measurement result(s) corresponding to all the integers k, unbiased estimation of a computed result of eliminating quantum measurement noise. Drawings of the Description _ _Classicalbit P output Fig. 3 102401 1021 401 1021 Fig. 4 1021 Classical bit p* ~ output M Qubit output Fig. 5 _02 _ 1021 Fig. 6
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2.发明专利
公开(公告)号：AU2022201682A1
公开(公告)日：2022-03-31
申请号：AU2022201682
申请日：2022-03-10
IPC: G06N10/00
Abstract: The present disclosure provides a method for denoising a quantum device and an apparatus for denoising a quantum device, and relates to the technical fields, such as quantum circuits, 5 quantum algorithms, and quantum calibration. A specific implementation scheme includes: acquiring a noise channel of an actual quantum device; determining a truncation coefficient based on the noise channel, the truncation coefficient being used for characterizing the number of expanded items of a 10 Neumann series of the noise channel at a current error tolerance; running the actual quantum device to generate an intermediate quantum state; performing a first iteration of applying the noise channel to the intermediate quantum state for the number of times, the number being equal to a value of the truncation 15 coefficient, each applying stage of the first iteration being performed based on a result of a previous applying stage of the first iteration; and computing a zero-noise expected value of an ideal quantum device corresponding to the actual quantum device based on the intermediate quantum state and a resultant 20 quantum state obtained through each applying stage of the first iteration. This embodiment realizes the denoising of a quantum circuit.
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3.发明专利
公开(公告)号：AU2022263561A1
公开(公告)日：2023-05-25
申请号：AU2022263561
申请日：2022-11-04
Inventor： WANG KUN
Abstract: Abstract A method is provided. The method includes: determining an order of a crosstalk noise of a quantum computer; determining a set of calibration circuits based on the order of the crosstalk noise; preparing a respective standard basis quantum state based on each calibration circuit in the set of calibration circuits, the quantum measurement device is repeatedly run for a predetermined number of times for each standard basis quantum state to measure the standard basis quantum state and to obtain a predetermined number of measurement results ; performing a statistic process on the obtained predetermined number of measurement results corresponding to each standard basis quantum state, to obtain a set of calibration data; determining a global generator based on a hardware topological structure of the quantum computer and the set of calibration data; and constructing a calibration matrix based on the global generator, so as to correct the measurement results of the quantum computer based on the calibration matrix. Fig. 4 10' This solution Tensor product A% model Structureless model 2 4 6 8 10 12 14 16 18 20 Maximum order K of crosstalk noise Fig. 5
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