ITP OpenIR  > 理论物理所科研产出  > SCI论文
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.
Sensitive chemical compass assisted by quantum criticality
Source PublicationPHYSICAL REVIEW A
Language英语
KeywordMagnetoreception Photosynthesis Temperature Coherence Systems Birds Model
AbstractA 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
ISSN1050-2947
Volume85Issue:2Pages:22315
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational 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
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15160
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCai, 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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