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Detecting a single atom in a cavity using the x(2)nonlinear medium
文献摘要:
We propose a protocol for detecting a single atom in a cavity with the help of the x(2)nonlinear medium.When the x(2)nonlinear medium is driven by an external laser field,the cavity mode will be squeezed,and thus one can obtain an exponentially enhanced light-matter coupling.Such a strong coupling between the atom and the cavity field can significantly change the output photon flux,the quantum fluctuations,the quantum statistical property,and the photon number distributions of the cavity field.This provides practical strategies to determine the presence or absence of an atom in a cavity.The proposed protocol exhibits some advantages,such as controllable squeezing strength and exponential increase of atom-cavity coupling strength,which make the experimental phenomenon more obvious.We hope that this protocol can supplement the existing intracavity single-atom detection protocols and provide a promise for quantum sensing in different quantum systems.
文献关键词:
作者姓名:
Dong-Liang Chen;Ye-Hong Chen;Yang Liu;Zhi-Cheng Shi;Jie Song;Yan Xia
作者机构:
Fujian Key Laboratory of Quantum Information and Quantum Optics(Fuzhou University),Fuzhou 350108,China;Department of Physics,Fuzhou University,Fuzhou 350108,China;Theoretical Quantum Physics Laboratory,RIKEN Cluster for Pioneering Research,Wako-shi,Saitama 351-0198,Japan;Department of Physics,Harbin Institute of Technology,Harbin 150001,China
文献出处:
引用格式:
[1]Dong-Liang Chen;Ye-Hong Chen;Yang Liu;Zhi-Cheng Shi;Jie Song;Yan Xia-.Detecting a single atom in a cavity using the x(2)nonlinear medium)[J].物理学前沿,2022(05):188-196
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B类:
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AB值:
0.550289
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