期刊
出版社
ROYAL SOC
DOI: 10.1098/rspa.2020.0778
关键词
avian magnetoreception; quantum coherence; quantum biology
资金
- Ministry of Electronics and Information Technology
- Department of Science and Technology, Government of India, through the Nanoelectronics Network for Research and Applications, IIT Bombay
- Department of Science and Technology, Government of India
Theoretical studies show that long-lived coherence in the radical pair system is unlikely in a multinuclear environment, and hyperfine anisotropy is essential for the necessary sensitivity of the compass. The research identifies a parameter regime where the compass can exhibit good sensitivity even without sustained electron spin coherence.
Theoretical studies indicating the presence of long-lived coherence in the radical pair system have engendered questions about its utilitarian role in the avian compass. In this paper, we investigate the role of electron spin coherence in a multinuclear radical pair system including its impact on compass sensitivity. We find that sustenance of long-lived electron spin coherence is unlikely in a multinuclear hyperfine environment. After probing the role of the hyperfine interactions in the compass, we affirm the hyperfine anisotropy to be an essential parameter for the necessary sensitivity required for the compass action. Thereby, we identify a parameter regime where the compass would exhibit good sensitivity even without sustained electron spin coherence.
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