Quantum Simulation Apparatus Reducing Memory via State Extraction
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Solution Overview
Problem
Current classic quantum simulators face limitations in simulating a large number of qubits due to exponential memory and computational resource requirements, making it impractical to simulate quantum states beyond 50 qubits with available technology.
Innovation Solution
A quantum simulation apparatus and method that configures a reduced quantum state space using multi-quantum registers, selectively managing only quantum states with physical reality, allowing for more qubits to be simulated with smaller memory resources and enabling faster quantum operations by optimizing the execution of quantum circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a classic computer simulates a quantum state of 50 qubits, then the simulation can be executed, but lots of memory resources and computational resources are required
Solution Approach 1:
The patent divides the quantum simulation process into multiple segments: (1) identifying and extracting only the physically relevant quantum states with non-zero amplitudes from the full quantum state space, (2) separating the simulation of these relevant states from the irrelevant zero-amplitude states, and (3) processing each segment independently to reduce overall computational and memory requirements
Solution Approach 2:
The patent extracts and isolates only the physically meaningful quantum states (those with non-zero amplitude values) from the complete quantum state space. By taking out and focusing solely on these relevant states, the system eliminates the need to store and process the vast number of zero-amplitude states, thereby significantly reducing memory and computational resource consumption while maintaining simulation accuracy
2Reliability
If the full quantum state space is simulated, then all quantum states are represented, but memory resources increase exponentially
Solution Approach 1:
The patent extracts only the non-zero amplitude quantum states from the full quantum state space, removing the redundant zero-amplitude states. This extraction maintains reliability by preserving all physically meaningful quantum states while eliminating memory-consuming irrelevant states
Solution Approach 2:
The patent applies local quality by treating different quantum states differently based on their amplitude values. States with non-zero amplitudes receive full computational attention and resource allocation, while states with zero amplitudes are excluded from storage and processing, optimizing the distribution of memory resources according to the physical significance of each state
Data Source
AI summary
A quantum simulation apparatus according to an embodiment of the present disclosure includes a quantum circuit distributor configured to receive and transfer a plurality of quantum circuits, and a multi-quantum register controller configured to control independent allocation and execution of the input quantum circuits into multi-quantum registers supporting a reduced quantum state space, wherein the multi-quantum register provides the reduced quantum state space with respect to a real quantum state having a physical reality with an amplitude value that is not 0 in a wide-area quantum state space.