Quantum Controller Module Links With Deterministic Low-Latency Timing

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Solution Overview

Problem

Conventional communication protocols between quantum controller modules in quantum computers face challenges in achieving high bandwidth, low latency, and deterministic latency, which are essential for seamless operation of complex quantum algorithms requiring multiple pulse processors across multiple quantum controller modules.

Innovation Solution

A communication protocol utilizing high-speed transceivers with AC-coupled serial input/output, synchronized clocking, and phase shifters to minimize latency, along with initialization and calibration methods to ensure deterministic latency across multiple quantum controller modules, enabling synchronized data transfer and control of qubits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional communication protocols are used between quantum controller modules, then system compatibility and ease of implementation are improved, but bandwidth is limited and latency cannot be minimized

Engineering Contradiction:

Improveease of implementationVSAvoidbandwidth

Core Design Contradiction:

Ease of operationVSSpeed

Solution Approach 1:

The patent changes the communication parameters by implementing AC-coupled serial communication with specific clocking schemes and phase shifters, transforming the communication protocol from conventional to optimized for quantum controller modules, achieving both high bandwidth and deterministic latency

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If conventional communication protocols are used between quantum controller modules, then system simplicity is maintained, but latency is not deterministic and cannot be minimized

Engineering Contradiction:

Improvesystem simplicityVSAvoidlatency

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent applies preliminary action through initialization and calibration sequences that are executed before normal communication begins. These preliminary steps configure the AC-coupled serial interface, clock domains, and phase shifters to establish deterministic latency characteristics from the start of operation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces conventional communication mechanisms with AC-coupled serial communication and phase shifter-based timing control, substituting traditional timing methods with a system that uses controlled phase shifts to achieve deterministic latency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If multiple pulse processors across multiple quantum controller modules are used to execute complex quantum algorithms, then computational capability is improved, but communication latency and synchronization challenges increase

Engineering Contradiction:

Improvecomputational capabilityVSAvoidcommunication latency

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent segments the quantum control system into multiple independent quantum controller modules, each capable of executing portions of quantum algorithms. The AC-coupled serial communication protocol enables these segmented controllers to communicate efficiently with deterministic latency

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements feedback mechanisms through the communication protocol that allow quantum controller modules to synchronize their operations. The deterministic latency characteristics enable precise timing feedback for coordinating pulse processors across multiple modules

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12494850B2System and method for communication between quantum controller modules

Publication Date: 2025.12.09 Q M TECH LTD

AI summary

A channel between quantum controller modules (e.g., pulse processors) is operable to communicate high speed data required for processing qubit states that may be distributed across a quantum computer. The latency of the communication channel is deterministic and controllable according to a system clock domain.