Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics

doi:10.1103/PhysRevX.13.031009

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	Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics
	Sun, Yue 1; Shi, Tao 2,3; Liu, Zhiyong 4,5; Zhang, Zhidong 4,5; Xiao, Liantuan 1; Jia, Suotang 1; Hu, Ying 1
刊名	PHYSICAL REVIEW X
	2023
卷号	13 期号:3 页码:31009
关键词	PARITY-TIME SYMMETRY STATES DISSIPATION SYSTEMS DRIVEN ATOMS
ISSN号	2160-3308
DOI	10.1103/PhysRevX.13.031009
英文摘要	Exploring non-Hermitian phenomenology is an exciting frontier of modern physics. However, the demonstration of a non-Hermitian phenomenon that is quantum in nature has remained elusive. Here, we predict quantum non-Hermitian phenomena: the fractional quantum Zeno (FQZ) effect and FQZ-induced photon antibunching. We consider a quantum optics platform with reservoir engineering, where nonlinear emitters are coupled to a bath of decaying bosonic modes whose own decay rates form band structures. By engineering the dissipation band, the spontaneous emission of emitters can be suppressed by strong dissipation through an algebraic scaling with fractional exponents-the FQZ effect. This fractional scaling originates uniquely from the divergent dissipative density of states near the dissipation band edge, different from the traditional closed-bath context. We find FQZ-induced strong photon antibunching in the steady state of a driven emitter even for weak nonlinearities. Remarkably, we identify that the sub-Poissonian quantum statistics of photons, which has no classical analogs, stems here from the key role of non-Hermiticity. Our setup is experimentally feasible with the techniques used to design lattice models with dissipative couplings.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27982]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China 2.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 6.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yue,Shi, Tao,Liu, Zhiyong,et al. Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics[J]. PHYSICAL REVIEW X,2023,13(3):31009.
APA	Sun, Yue.,Shi, Tao.,Liu, Zhiyong.,Zhang, Zhidong.,Xiao, Liantuan.,...&Hu, Ying.(2023).Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics.PHYSICAL REVIEW X,13(3),31009.
MLA	Sun, Yue,et al."Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics".PHYSICAL REVIEW X 13.3(2023):31009.