Abstract: A method is provided that includes: determining a plurality of ions for generating a quantum gate; in response to determining that the plurality of ions are located in at least two ion trap sections, performing an ion shuttle operation through an ion shuttle channel, such that the plurality of ions are all located in a first ion trap section of the at least two ion trap sections; and generating a quantum gate based on the plurality of ions in the first ion trap section after the ion shuttle operation. The first quantum gate is to be generated based on an ion trap chip. The ion trap chip includes a plurality of ion trap sections, each of the plurality of ion trap sections includes no more than a first number of ions, and the plurality of ion trap sections are coupled through ion shuttle channels.

Abstract: Provided are a quantum chip structure, a determining method, a device and a storage medium, and relates to the field of computer technology, and in particular, to the field of quantum computation. The quantum chip structure includes: a ring structure composed of n center qubits, where two adjacent center qubits in the ring structure are connected through a coupler; and n is a natural number greater than or equal to 3; and two-linear structures drawn from a center qubit Qi toward outside of the ring structure; where a first linear structure in the two-linear structures contains ai first qubits; and a second linear structure in the two-linear structures contains bi second qubits. In this way, a quantum chip structure with high connectivity is obtained.

Abstract: A digital signature method includes: obtaining a to-be-transmitted file, a private key and first compressed data, the first compressed data being obtained through compressing a symmetric tensor, the private key including a first invertible matrix; generating L pieces of second compressed data corresponding to L second symmetric tensors in accordance with the first invertible matrix and the first compressed data; creating a Hash value of a root node in a Hash tree in accordance with L pieces of created data, the L pieces of created data being the L pieces of second compressed data or the L second symmetric tensors; and generating signature information about the to-be-transmitted file for the first electronic device in accordance with the first character string, the first invertible matrix, the second invertible matrix, the L pieces of second compressed data and the Hash value of the root node in the Hash tree.

Abstract: A method includes: obtaining a set of characterizing equations for a quantum gate to be benchmarked; in response to the set of characterizing equations including another quantum gate, determining whether the another quantum gate has been benchmarked as trusted; in response to the another quantum gate having been benchmarked as trusted, successively performing a quantum gate operation on each characterizing equation in the set of characterizing equations to obtain, for each characterizing equation, a corresponding measurement result; for each characterizing equation, determining whether the measurement result for the characterizing equation meets an expected result in the characterizing equation for characterization; and in response to the measurement results for each characterizing equation in the set of characterizing equations meeting the expected result, benchmarking the quantum gate to be benchmarked as trusted.

Abstract: The present disclosure provides a method for denoising a quantum device, and relates to the technical fields, such as quantum circuits, quantum algorithms, and quantum calibration. A specific implementation includes: acquiring a noise channel of an actual quantum device; determining a truncation coefficient based on the noise channel; 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 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 quantum state obtained through each applying stage of the first iteration.

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, M1 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.

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.

Abstract: This application discloses a digital signature method, a signature information verification method, a related apparatus and an electronic device, and relates to the field of information security in quantum computing. The digital signature method includes: acquiring a to-be-sent file and a private key used by a first electronic device for digital signature, where the private key includes a first invertible matrix; generating, based on a randomly generated second invertible matrix and a first tensor, a second tensor isomorphic to the first tensor; using a hash function to digitally sign the to-be-sent file based on the second tensor, to obtain a first character string; generating, based on the first character string, the first invertible matrix and the second invertible matrix, signature information provided by the first electronic device for the to-be-sent file.