Sensitive chemical compass assisted by quantum criticality

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	Sensitive chemical compass assisted by quantum criticality
	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.
	2012
发表期刊	PHYSICAL REVIEW A
ISSN	1050-2947
卷号	85 期号:2 页码:22315
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.
部门归属	[Cai, C. Y.; Ai, Qing; Sun, C. P.] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Quan, H. T.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA; [Quan, H. T.] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA
关键词	Magnetoreception Photosynthesis Temperature Coherence Systems Birds Model
学科领域	Physics
资助者	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] ; 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]
URL	查看原文
收录类别	SCI
语种	英语
资助者	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] ; 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]
WOS记录号	WOS:000300235300006
引用统计
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/15160
专题	理论物理所SCI论文
通讯作者	Cai, CY (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式 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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