期刊
QUANTUM INFORMATION PROCESSING
卷 20, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1007/s11128-021-03079-z
关键词
Digital quantum simulation; Error mitigation; Noise extrapolation; Optimal state preparation
资金
- U.S. Department of Energy (DOE) National Nuclear Security Administration [89233218CNA000001]
- LANL LDRD Program
- NNSA ASC Program
Digital quantum simulation uses quantum computers to simulate the dynamics of quantum systems. By utilizing IBM quantum computers, non-equilibrium dynamics of systems were successfully simulated, showing potential for large-scale quantum simulations of light-matter interactions in the future. Error mitigation techniques and optimized initial state preparation were found to be effective in overcoming drawbacks of quantum devices.
Digital quantum simulation uses the capabilities of quantum computers to determine the dynamics of quantum systems, which are beyond the computability of modern classical computers. A notoriously challenging task in this field is the description of non-equilibrium dynamics in quantum many-body systems. Here, we use the IBM quantum computers to simulate the non-equilibrium dynamics of few spin and fermionic systems. Our results reveal that with a combination of error mitigation, noise extrapolation and optimized initial state preparation, one can tackle the most important drawbacks of modern quantum devices. The systems we simulate demonstrate the potential for large-scale quantum simulations of light-matter interactions in the near future.
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