Quantum Circuit Layers for Linear Sums of Unitary Operators

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Solution Overview

Problem

Current quantum computers lack a method to efficiently calculate generic linear sums of unitary operators, necessitating the use of classical algorithms which are limited in calculation speed and capacity, hindering the computation of certain physical quantities and functions.

Innovation Solution

A quantum computer configuration that includes a setting unit to set parameter groups for n layers based on coefficients in a linear sum of unitary operators, utilizing n+m qubits with auxiliary and target qubits to perform calculations and specify the linear sum through a quantum gate, enabling quantization of the calculation process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If classical algorithms are used to calculate linear sums of unitary operators, then the calculation can be performed with existing technology, but the calculation speed and capacity are limited

Engineering Contradiction:

Improvecalculability of physical quantitiesVSAvoidcalculation speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent replaces classical computational mechanisms with quantum mechanical mechanisms. Specifically, it uses quantum gates (unitary operators) to perform calculations on quantum states, leveraging quantum superposition and entanglement to compute linear sums of unitary operators exponentially faster than classical algorithms can handle

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If quantum computation is implemented for linear sums of unitary operators, then calculation speed improves, but device complexity increases

Engineering Contradiction:

Improvecalculation speedVSAvoidquantum gate structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the quantum computation process into distinct functional components: parameter setting units that configure quantum states, quantum gate units that execute unitary operations, and measurement units that extract results. This modular segmentation of the quantum circuit architecture allows for systematic construction and optimization of complex quantum algorithms while managing device complexity through structured design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs dynamic parameter adjustment within the quantum gate structure, where parameters of unitary operators are recursively set based on previous layer parameters. This dynamic configuration allows the quantum system to adaptively optimize its computational path, improving calculation efficiency while maintaining manageable complexity through controlled parameter evolution rather than static rigid structures

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11574231B2Quantum computer, non-transitory computer readable media storing program, quantum calculation method, and quantum circuit

Publication Date: 2023.02.07 QUEMIX INC

AI summary

A quantum computer includes: a setting unit configured to set a parameter group of n layers based on each coefficient in a linear sum of unitary operators whose number is 2 to the n-th power, wherein the parameter group of k-th (2≤k≤n) layer is recursively set based on the parameter group of (k−1)-th layer; a quantum gate having n+m qubits including n auxiliary qubits and m target qubits, and configured to execute a predetermined calculation on an input value input to each qubit based the parameter group of n layers; and a specification unit configured to specify the linear sum of the unitary operators based on a calculation result of the quantum gate.