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Sudden death of quantum advantage in correlation generations
Weixiao Sun1, Fuchuan Wei2,3, Yuguo Shao2,3
1Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing 100084, China.
Science Advances
|November 22, 2024
Summary
Quantum noise significantly impacts quantum advantage. As noise increases, quantum advantage gradually fades, and can even abruptly vanish above a critical threshold, highlighting noise
Area of Science:
- Quantum Information Science
- Quantum Computing
- Quantum Information Theory
Background:
- Quantum noise is a major impediment to realizing large-scale quantum algorithms.
- The precise impact of varying quantum noise levels on quantum advantage remains poorly understood.
- Correlation generation models offer a framework for quantifying quantum advantage in information processing tasks.
Purpose of the Study:
- To investigate the dynamical effects of increasing quantum noise on quantum advantage.
- To utilize correlation generation models for insights into noise-induced degradation of quantum advantage.
- To quantify the relationship between noise strength and the persistence of quantum advantage.
Main Methods:
- Theoretical analysis using correlation generation models.
- Mathematical proof of quantum advantage behavior under continuous noise increase.
- Identification and characterization of noise-induced quantum advantage phenomena.
Main Results:
- Quantum advantage diminishes gradually as quantum noise strength increases from zero.
- Quantum advantage eventually vanishes with increasing noise.
- A phenomenon of 'sudden death' of quantum advantage was observed, where it abruptly disappears above a specific noise threshold.
Conclusions:
- The correlation generation model provides valuable insights into the dynamics of quantum noise effects.
- Noise has a profound and sometimes abrupt impact on quantum information processing tasks.
- Understanding these noise dynamics is crucial for the development of robust quantum technologies.
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