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Updated: May 25, 2025
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
8.9K
Robust and optimal control of open quantum systems.
Zi-Jie Chen1, Hongwei Huang2, Lida Sun2
1CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China.
Science Advances
|February 26, 2025
Summary
This study introduces an improved quantum control algorithm that suppresses system imperfections and noise in open quantum systems. The enhanced algorithm achieves ultralow infidelity, demonstrating superior performance for practical quantum technologies.
Area of Science:
- Quantum Control
- Quantum Information Science
- Superconducting Circuits
Background:
- Quantum technologies require mitigation of system imperfections like parameter uncertainties and decoherence.
- Existing quantum control methods primarily focus on closed quantum systems, limiting applications for open systems.
Purpose of the Study:
- To develop an improved quantum control algorithm for robust and optimal control of open quantum systems.
- To enhance scalability and performance by suppressing system imperfections and noise.
Main Methods:
- Algorithm improvement for suppressing system imperfections and noise.
- Experimental validation using a superconducting quantum circuit.
Main Results:
- The improved algorithm demonstrates ultralow infidelity (approximately 0.60%) in experimental validation.
- The algorithm shows enhanced scalability for open quantum systems compared to conventional methods.
- Performance surpasses conventional counterparts designed for closed quantum systems.
Conclusions:
- The developed quantum control technique offers significant advancements for practical quantum applications.
- This work paves the way for realizing robust quantum-enhanced technologies by effectively managing open system dynamics.
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