FPGA Pulse Encoding for Quantum Laser Modulation
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Solution Overview
Problem
Trapped ion quantum computers require precise laser pulse modulation to perform quantum operations, but existing technologies lack efficient methods to generate and control these pulses based on complex quantum operation programs.
Innovation Solution
A classical computing device compiles program source code including quantum operations, determines pulse shapes from a pulse shape library, generates pulse instructions, and encodes them in binary format instructions for a Field Programmable Gate Array (FPGA) to control the laser modulation system of a quantum computing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a classical computing device compiles program source code and generates pulse instructions using a pulse shape library, then the precision and accuracy of laser pulse modulation for quantum operations is improved, but the device complexity and computational overhead increase
Solution Approach 1:
The patent pre-generates and stores optimized pulse shapes in a pulse shape library during system initialization or offline processing. When quantum operations need to be executed, the system simply retrieves pre-computed pulse instructions from the library rather than performing complex real-time calculations, thus achieving high precision without real-time computational complexity
Solution Approach 2:
The patent divides the laser pulse generation process into separate modular components: program compilation, pulse shape selection from library, parameter adjustment, and FPGA execution. This segmentation allows each component to be optimized independently and simplifies the overall system architecture while maintaining high precision pulse modulation
2Reliability
If pulse shapes are determined from a pulse shape library for each quantum operation, then the execution accuracy of quantum operations is improved, but the time required to generate pulse instructions increases
Solution Approach 1:
The patent performs pulse shape computation and optimization in advance, storing the results in a pulse shape library. During quantum operation execution, the system only needs to retrieve and apply pre-computed pulse shapes, dramatically reducing the time required while maintaining high execution accuracy
Solution Approach 2:
The patent creates and stores template pulse shapes that can be reused across multiple quantum operations. Instead of computing unique pulse instructions for each operation, the system copies and adapts proven pulse templates from the library, reducing computation time while preserving operational accuracy
Data Source
AI summary
Systems and techniques are provided for pulse generation. A classical computing device may receive a program source code including quantum operations. The program source code may be compiled into a compiled program including the one or more quantum operations. Pulse shapes that a pulse shape library indicates corresponds to each of the quantum operations may be determined. Pulse instructions based on the one or more pulse shapes that the pulse shape library indicates corresponds to each of the quantum operations may be generated. Binary format instructions may be generated based on the pulse instructions. The binary format instruction may encode the pulse instructions in binary packets using a binary code of a field programmable gate array (FPGA) of a quantum computing device.