Quantum Circuit Correlated Noise Suppression with Selective Decoupling
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Solution Overview
Problem
Existing quantum computers face challenges in suppressing correlated noise, particularly coherent noise, which affects accuracy quadratically more than incoherent errors, and current methods like dynamical decoupling struggle with scalability and precision in large-scale quantum circuits.
Innovation Solution
A system and method that determines portions of a quantum circuit susceptible to noise errors and applies context-aware dynamical decoupling sequences or compiles the inverse of noise errors into the circuit based on spatial and temporal context, using error detection and reduction components to minimize circuit overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamical decoupling is applied to suppress correlated noise, then noise suppression effectiveness is improved, but device complexity and circuit overhead increase
Solution Approach 1:
The patent segments the quantum circuit into distinct portions based on susceptibility to correlated noise. The error detection component identifies specific circuit segments that require noise suppression, allowing dynamical decoupling to be applied selectively rather than uniformly across the entire circuit. This segmentation reduces unnecessary overhead in noise-resilient portions while maintaining effectiveness in vulnerable segments.
Solution Approach 2:
The patent applies local quality by tailoring the noise suppression approach to the specific characteristics of different circuit portions. The error reduction component compiles inverse noise errors based on the context of each identified portion, applying context-aware dynamical decoupling sequences that are optimized for local circuit properties rather than using a one-size-fits-all approach.
2Measurement precision
If context-aware error compensation is implemented, then quantum circuit fidelity is improved, but computational overhead increases
Solution Approach 1:
The patent implements preliminary action by pre-compiling inverse noise error sequences before executing the quantum circuit. The system determines noise-susceptible portions and prepares context-aware error compensation sequences in advance, so that when the circuit executes, the fidelity improvement is achieved without real-time computational overhead.
Solution Approach 2:
The patent changes parameters by adapting the error compensation strategy based on the specific context of each circuit portion. The system modifies the compensation sequences according to the temporal and spatial characteristics of the quantum circuit, optimizing the balance between fidelity improvement and computational overhead for each specific scenario.
Data Source
AI summary
Systems and techniques that facilitate quantum noise suppression are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory that can execute the computer executable components stored in memory. The computer executable components can comprise an error detection component that determines one or more portions of a quantum circuit susceptible to noise errors; and an error reduction component that compiles an inverse of the noise errors into the quantum circuit based on context of the quantum circuit and the one or more determined portions of the quantum circuit.