Sensitive chemical compass assisted by quantum criticality
文献类型：期刊论文
| 作者 | Sun, CP
|
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:2页码:22315 |
| ISSN号 | 1050-2947 |
| 关键词 | MAGNETORECEPTION PHOTOSYNTHESIS TEMPERATURE COHERENCE SYSTEMS BIRDS MODEL |
| 通讯作者 | Cai, CY (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| 英文摘要 | A radical-pair-based chemical reaction might be used by birds for navigation via the geomagnetic direction. The inherent physical mechanism is that the quantum coherent transition from a singlet state to triplet states of the radical pair could respond to a weak magnetic field and be sensitive to the direction of such a field; this then results in different photopigments to be sensed by the avian eyes. Here, we propose a quantum bionic setup, inspired by the avian compass, as an ultrasensitive probe of a weak magnetic field based on the quantum phase transition of the environments of the two electrons in the radical pair. We prove that the yield of the chemical products via recombination from the singlet state is determined by the Loschmidt echo of the environments with interacting nuclear spins. Thus quantum criticality of environments could enhance the sensitivity of detection of weak magnetic fields. |
| 学科主题 | Physics |
| 资助信息 | National Natural Science Foundation of China [10935010, 11074261]; National Science Foundation (U.S.A.) [DMR-0906601] |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevA.85.022315 |
| 语种 | 英语 |
| WOS记录号 | WOS:000300235300006 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15160]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Sun, CP. Sensitive chemical compass assisted by quantum criticality[J]. PHYSICAL REVIEW A,2012,85(2):22315. |
| APA | Sun, CP.(2012).Sensitive chemical compass assisted by quantum criticality.PHYSICAL REVIEW A,85(2),22315. |
| MLA | Sun, CP."Sensitive chemical compass assisted by quantum criticality".PHYSICAL REVIEW A 85.2(2012):22315. |
入库方式： OAI收割
来源：理论物理研究所
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