Patents by Inventor Kangkang Liu

Kangkang Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10749540
    Abstract: A microwave resonant cavity for laser cooling, microwave interrogation, and atomic state detection, comprising a microwave resonant cavity body, two cutoff waveguide end covers, and four waveguides for laser beams and microwave coupling. The cavity feeds not only microwave but also laser beams into the center of the cavity. In a vacuum chamber with target atoms, the target atoms may be trapped and cooled in the center of the cavity. By sequential operation of the resonant microwave and lasers, the microwave resonant cavity of the present invention may manipulate and detect the atomic state population and interrogate the energy level of the cold atoms in situ. The invention may be applied to the fields of atomic frequency standard, interferometer and atomic gyro for developing the miniaturized cold atoms related precision measurement equipment.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 18, 2020
    Assignee: Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
    Inventors: Desheng Lv, Zhen Zhang, Xinwen Wang, Wei Ren, Xiangkai Peng, Kangkang Liu, Jingfeng Xiang, Liang Liu
  • Publication number: 20200076441
    Abstract: A microwave resonant cavity for laser cooling, microwave interrogation, and atomic state detection, comprising a microwave resonant cavity body, two cutoff waveguide end covers, and four waveguides for laser beams and microwave coupling. The cavity feeds not only microwave but also laser beams into the center of the cavity. In a vacuum chamber with target atoms, the target atoms may be trapped and cooled in the center of the cavity. By sequential operation of the resonant microwave and lasers, the microwave resonant cavity of the present invention may manipulate and detect the atomic state population and interrogate the energy level of the cold atoms in situ. The invention may be applied to the fields of atomic frequency standard, interferometer and atomic gyro for developing the miniaturized cold atoms related precision measurement equipment.
    Type: Application
    Filed: March 22, 2019
    Publication date: March 5, 2020
    Inventors: Desheng LV, Zhen Zhang, Xinwen Wang, Wei Ren, Xiangkai Peng, Kangkang Liu, Jingfeng Xiang, Liang Liu
  • Publication number: 20150227577
    Abstract: Disclosed are a method and device for guaranteeing consistency of planning data, which relate to the field of wireless networks. The method comprises: according to an actual configuration of a network, the network management data about an actual operation of the network is derived; the planning data is converted into an intermediate file with a same format as that of the network management data; the intermediate file is compared with the network management data, and the network management data is updated according to the comparison result to enable the planning data to be consistent with the network management data. The present disclosure can guarantee that the planning data is consistent with the network management data, thereby guaranteeing the performance reliability of the network during operation.
    Type: Application
    Filed: August 23, 2013
    Publication date: August 13, 2015
    Inventors: Kangkang Liu, Chunjin Pan, Shihui Zhang, Bingxin Jiang, Tian Meng, Haitao Jin