Knowledge Management System of Institute of Theoretical Physics, CAS
Cai, CY; Ai, Q; Quan, HT; Sun, CP ; Cai, CY (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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| Sensitive chemical compass assisted by quantum criticality | |
| Source Publication | PHYSICAL REVIEW A
 |
| Language | 英语 |
| Keyword | Magnetoreception Photosynthesis Temperature Coherence Systems Birds Model |
| Abstract | 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. |
| 2012 | |
| ISSN | 1050-2947 |
| Volume | 85Issue:2Pages:22315 |
| Subject Area | Physics |
| Indexed By | SCI |
| Funding Organization | National Natural Science Foundation of China [10935010, 11074261]; National Science Foundation (U.S.A.) [DMR-0906601] ; National Natural Science Foundation of China [10935010, 11074261]; National Science Foundation (U.S.A.) [DMR-0906601] ; National Natural Science Foundation of China [10935010, 11074261]; National Science Foundation (U.S.A.) [DMR-0906601] ; National Natural Science Foundation of China [10935010, 11074261]; National Science Foundation (U.S.A.) [DMR-0906601] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/15160 |
| Collection | 理论物理所科研产出_SCI论文 |
| Corresponding Author | Cai, CY (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Cai, CY,Ai, Q,Quan, HT,et al. Sensitive chemical compass assisted by quantum criticality[J]. PHYSICAL REVIEW A,2012,85(2):22315. |
| APA | Cai, CY,Ai, Q,Quan, HT,Sun, CP,&Cai, CY .(2012).Sensitive chemical compass assisted by quantum criticality.PHYSICAL REVIEW A,85(2),22315. |
| MLA | Cai, CY,et al."Sensitive chemical compass assisted by quantum criticality".PHYSICAL REVIEW A 85.2(2012):22315. |
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| File Name/Size | DocType | Version | Access | License | ||
| Sensitive chemical c（419KB） | 开放获取 | License | Application Full Text | |||
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