The Experts below are selected from a list of 63 Experts worldwide ranked by ideXlab platform
Gui-lu Long - One of the best experts on this subject based on the ideXlab platform.
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Enhanced sensitivity of optical gyroscope in a mechanical parity-time-symmetric system based on exceptional point
New Journal of Physics, 2020Co-Authors: Xuan Mao, Guo-qing Qin, Hong Yang, Hao Zhang, Min Wang, Gui-lu LongAbstract:As an important device for detecting rotation, high sensitivity gyroscope is required for practical applications. In recent years, exceptional point (EP) shows its potential in enhancing the sensitivity of sensing in optical cavity. Here we propose an EP enhanced optical gyroscope based on mechanical PT-symmetric system in microcavity. By pumping the two optical modes with different colors, i.e. blue and red detuning, an effective mechanical PT-symmetric system can be obtained and the system can be prepared in EP with appropriate parameters. Compared with the situation of diabolic point, EP can enhance the sensitivity of gyroscope with more than one order of magnitude in the weak perturbation regime. The results show the gyroscope can be enhanced effectively by monitoring mechanical modes rather than optical modes. Our work provides a promising approach to design gyroscope with higher sensitivity in optical microcavity and has potential values in some fields including Fundamental Physic and precision measurement.
Xuan Mao - One of the best experts on this subject based on the ideXlab platform.
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Enhanced sensitivity of optical gyroscope in a mechanical parity-time-symmetric system based on exceptional point
New Journal of Physics, 2020Co-Authors: Xuan Mao, Guo-qing Qin, Hong Yang, Hao Zhang, Min Wang, Gui-lu LongAbstract:As an important device for detecting rotation, high sensitivity gyroscope is required for practical applications. In recent years, exceptional point (EP) shows its potential in enhancing the sensitivity of sensing in optical cavity. Here we propose an EP enhanced optical gyroscope based on mechanical PT-symmetric system in microcavity. By pumping the two optical modes with different colors, i.e. blue and red detuning, an effective mechanical PT-symmetric system can be obtained and the system can be prepared in EP with appropriate parameters. Compared with the situation of diabolic point, EP can enhance the sensitivity of gyroscope with more than one order of magnitude in the weak perturbation regime. The results show the gyroscope can be enhanced effectively by monitoring mechanical modes rather than optical modes. Our work provides a promising approach to design gyroscope with higher sensitivity in optical microcavity and has potential values in some fields including Fundamental Physic and precision measurement.
Christine Amory-mazaudier - One of the best experts on this subject based on the ideXlab platform.
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On the electric current systems in the Earth's environment some historical aspects. Part II : external part/ ionosphere/ disturbed variation
2001Co-Authors: Christine Amory-mazaudierAbstract:In this paper we present some historical aspects on ionospheric electric currents. Our attention is focused on the disturbed part of these currents at the origin of the Earth's magnetic field variation Dp. The steps described in this paper correspond to advances in Fundamental Physic, as well as in technology, data interpretation or other factors. The paper covers the period from 1870 up to now.
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On the electric current systems in the Earth's environment some historical aspects Part I : external part / ionosphere / quiet variation
GEOACTA, 1995Co-Authors: Christine Amory-mazaudierAbstract:In this paper we present some historical aspects on ionospheric electric currents. Our attention is focused on the regular part of these currents at the origin of the daily Earth's magnetic field variation SR. The steps described in this paper correspond to advances in Fundamental Physic, as well as in technology, data interpretation or other factors. The paper covers the period from 1870 up to now.
Hao Zhang - One of the best experts on this subject based on the ideXlab platform.
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Enhanced sensitivity of optical gyroscope in a mechanical parity-time-symmetric system based on exceptional point
New Journal of Physics, 2020Co-Authors: Xuan Mao, Guo-qing Qin, Hong Yang, Hao Zhang, Min Wang, Gui-lu LongAbstract:As an important device for detecting rotation, high sensitivity gyroscope is required for practical applications. In recent years, exceptional point (EP) shows its potential in enhancing the sensitivity of sensing in optical cavity. Here we propose an EP enhanced optical gyroscope based on mechanical PT-symmetric system in microcavity. By pumping the two optical modes with different colors, i.e. blue and red detuning, an effective mechanical PT-symmetric system can be obtained and the system can be prepared in EP with appropriate parameters. Compared with the situation of diabolic point, EP can enhance the sensitivity of gyroscope with more than one order of magnitude in the weak perturbation regime. The results show the gyroscope can be enhanced effectively by monitoring mechanical modes rather than optical modes. Our work provides a promising approach to design gyroscope with higher sensitivity in optical microcavity and has potential values in some fields including Fundamental Physic and precision measurement.
Hong Yang - One of the best experts on this subject based on the ideXlab platform.
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Enhanced sensitivity of optical gyroscope in a mechanical parity-time-symmetric system based on exceptional point
New Journal of Physics, 2020Co-Authors: Xuan Mao, Guo-qing Qin, Hong Yang, Hao Zhang, Min Wang, Gui-lu LongAbstract:As an important device for detecting rotation, high sensitivity gyroscope is required for practical applications. In recent years, exceptional point (EP) shows its potential in enhancing the sensitivity of sensing in optical cavity. Here we propose an EP enhanced optical gyroscope based on mechanical PT-symmetric system in microcavity. By pumping the two optical modes with different colors, i.e. blue and red detuning, an effective mechanical PT-symmetric system can be obtained and the system can be prepared in EP with appropriate parameters. Compared with the situation of diabolic point, EP can enhance the sensitivity of gyroscope with more than one order of magnitude in the weak perturbation regime. The results show the gyroscope can be enhanced effectively by monitoring mechanical modes rather than optical modes. Our work provides a promising approach to design gyroscope with higher sensitivity in optical microcavity and has potential values in some fields including Fundamental Physic and precision measurement.
