公开(公告)号：US20230351237A1

公开(公告)日：2023-11-02

申请号：US18202402

申请日：2023-05-26

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Pei YUAN ,  Shengyu ZHANG

IPC: G06N10/20 ,  G06N10/60

CPC classification number: G06N10/20 ,  G06N10/60

Abstract: The present disclosure relates to a quantum state preparation circuit generation method and apparatus, a quantum chip, and an electronic device. The quantum chip may be applied to various intelligent terminals and on-board devices. The method includes: determining a first unitary operator respectively encoding rc qubits and rt qubits into a control register and a target register; acquiring at least two second unitary operators for performing phase shifting on the n qubits; determining a third unitary operator for replacing a qubit of the control register and a qubit of the target register; generating diagonal unitary matrix quantum circuits based on the first, second, third, fourth unitary operators, and a diagonal unitary matrix operator; combining the diagonal unitary matrix quantum circuits with a single-bit gate to obtain at least two uniform control gates; and combining the at least two uniform control gates into a quantum state preparation circuit.

公开(公告)号：US20230385673A1

公开(公告)日：2023-11-30

申请号：US18199474

申请日：2023-05-19

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Pei YUAN ,  Shengyu ZHANG

IPC: G06N10/20

CPC classification number: G06N10/20

Abstract: The present disclosure relates to a method for generating a quantum state preparation circuit, a quantum state preparation method, and a quantum device. The method includes: configuring, based on parameters of the quantum state preparation circuit, an input register for the quantum state preparation circuit and determining a number of auxiliary quantum bits; configuring a copy register and a target register according to the number of the auxiliary quantum bits; obtaining a diagonal unitary matrix quantum circuit by performing circuit construction through the input register, the copy register and the target register according to a quantum bit copy mode obtained based on a grid restriction condition; combining the diagonal unitary matrix quantum circuit and a single bit quantum gate to obtain at least one uniformly controlled gate circuit; and generating the quantum state preparation circuit based on the at least one uniformly controlled gate circuit.

公开(公告)号：US20230080222A1

公开(公告)日：2023-03-16

申请号：US17985369

申请日：2022-11-11

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Pei YUAN ,  Shuai YANG ,  Guojing TIAN ,  Xiaoming SUN ,  Shengyu ZHANG

IPC: G06N10/20

Abstract: Provided are a quantum state preparation circuit generating method and apparatus, a superconducting quantum chip, and a storage medium. The method includes: configuring an input register storing n qubits, n being a positive integer; acquiring m ancilla qubits, m being a positive integer; configuring a copy register and a phase register storing m/2 ancilla qubits and m/2 ancilla qubits, respectively; processing qubits through the input register, the copy register, and the phase register, to obtain a diagonal unitary matrix quantum circuit; combining the diagonal unitary matrix quantum circuit and a single bit gate to obtain a uniform control matrix circuit; and combining different uniform control matrix circuits to obtain a quantum state preparation circuit.

公开(公告)号：US20240281694A1

公开(公告)日：2024-08-22

申请号：US18610133

申请日：2024-03-19

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Pei YUAN ,  Shengyu Zhang

IPC: G06N10/60 ,  G06F17/16 ,  G06N10/20 ,  G06N10/40

CPC classification number: G06N10/60 ,  G06F17/16 ,  G06N10/20 ,  G06N10/40

Abstract: This application provides a quantum circuit optimization method performed by an electronic device, and relates to quantum computing technologies. The method includes: transforming a to-be-optimized quantum circuit into a to-be-processed unitary matrix, and decomposing the to-be-processed unitary matrix iteratively, to obtain a first quantity of qubit uniformly controlled gates; decomposing each qubit uniformly controlled gate into a second quantity of qubit diagonal unitary matrices and a third quantity of single-qubit gates; determining, under constraints of a connected graph, a matching quantum circuit corresponding to each qubit diagonal unitary matrix; integrating the second quantity of matching quantum circuits and the third quantity of single-qubit gates, to obtain a target quantum circuit of each qubit uniformly controlled gate; and connecting the first quantity of target quantum circuits, to obtain an optimized quantum circuit.

公开(公告)号：US20230081903A1

公开(公告)日：2023-03-16

申请号：US18054724

申请日：2022-11-11

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Pei YUAN ,  Shuai YANG ,  Guojing TIAN ,  Xiaoming SUN ,  Shengyu ZHANG

IPC: G06N10/20

Abstract: A quantum state preparation circuit generation method and apparatus, a chip, a device, and a program product are provided, which relate to the field of quantum technology. The quantum state preparation circuit generation method includes: obtaining a target vector (21); generating a quantum state intermediate preparation circuit (22) for preparing the target vector on N qubits, the quantum state intermediate preparation circuit including N qubit uniform control gates, and N being a positive integer greater than or equal to 2; and converting each of the N qubit uniform control gates into a diagonal unitary matrix and a single bit gate, to obtain a quantum state preparation circuit (23) for preparing the target vector on the N qubits. This application can reduce a depth of a quantum state preparation circuit.