SU(1,1)

作品数：73被引量：82H指数：6
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相关领域：理学机械工程更多>>
相关作者：于肇贤吴建武张靖张德兴李春文更多>>
相关机构：华东师范大学清华大学东北石油大学华中师范大学更多>>
相关期刊：《Computers, Materials & Continua》《延安大学学报（自然科学版）》《Chinese Physics Letters》《Chinese Annals of Mathematics,Series B》更多>>
相关基金：国家自然科学基金国家教育部博士点基金湖北省高等学校省级教学研究项目湖北省自然科学基金更多>>
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Tolerance-enhanced SU(1,1) interferometers using asymmetric gain
《Chinese Physics B》2023年第1期190-195,共6页张建东 王帅 
Project supported by Leading Innovative Talents in Changzhou (Grant No.CQ20210107);Shuangchuang Ph.D Award (Grant No.JSSCBS20210915);Natural Science Research of Jiangsu Higher Education Institutions of China (Grant No.21KJB140007);the National Natural Science Foundation of China (Grant No.12104193)。
SU(1,1) interferometers play an important role in quantum metrology. Previous studies focus on various inputs and detection strategies with symmetric gain. In this paper, we analyze a modified SU(1,1) interferometer u...
关键词：SU(1 1)interferometer asymmetric gain Heisenberg limit quantum Cramer–Rao bound 
Negativity of Wigner function and phase sensitivity of an SU(1,1) interferometer
《Chinese Physics B》2019年第6期121-125,共5页Chun-Li Liu Li-Li Guo Zhi-Ming Zhang Ya-Fei Yu 
Project supported by the National Natural Science Foundation of China(Grant Nos.11574092,61775062,61378012,91121023,and 60978009);the National Basic Research Program of China(Grant No.2013CB921804);the Innovation Project of Graduate School of South China Normal University(Grant No.2017LKXM088)
Both the negativity of Wigner function and the phase sensitivity of an SU(1,1) interferometer are investigated in this paper. In the case that the even coherent state and squeezed vacuum state are input into the inter...
关键词：SU(1 1) INTERFEROMETER WIGNER FUNCTION PHASE sensitivity 
Some studies of the interaction between two two-level atoms and SU(1,1) quantum systems
《Chinese Physics B》2018年第10期116-122,共7页T M El-Shahat M Kh Ismail 
Herein, we present an approach to look for the best phenomenon to measure quantum correlation. The system of two isolated qubits each interacting with a single-mode cavity was theoretically created to study the quantu...
关键词：an isolated atom with a cavity SU （1 1） quantum discord concurrence 
Phase estimation of phase shifts in two arms for an SU(1,1)interferometer with coherent and squeezed vacuum states被引量：1
《Chinese Physics B》2017年第9期209-213,共5页龚乾坤 李栋 袁春华 区泽宇 张卫平 
Project supported by the National Natural Science Foundation of China(Grant Nos.11474095,11654005,and 11234003);the National Key Research and Development Program of China(Grant No.2016YFA0302000)
We theoretically study the quantum Fisher information（QFI） of the SU（1,1） interferometer with phase shifts in two arms by coherent squeezed vacuum state input, and give the comparison with the result of phase shi...
关键词：phase estimation quantum Fisher information SU（1 1） interferometer 
Quantum entanglement in the system of a moving V-type three-level atom interacting with the SU（1,1）-related coherent fields
《Chinese Physics B》2007年第5期1344-1350,共7页胡要花 方卯发 廖湘萍 
Project supported by the National Natural Science Foundation of China （Grant No 10374025） and by Hunan Provincial Natural Science Foundation of China （Grant No 06JJ4003）.
In a system with a moving V-type three-level atom interacting with the SU（1,1）-related coherent fields, we investigate the entanglement between the moving three-level atom and the SU（1,1）-related coherent fields b...
关键词：three-level atoms SU（1 1）-related coherent fields ENTANGLEMENT reduced entropy relative entropy 
Spontaneous U（1） symmetry breaking and Bose-Einstein condensation
《Chinese Physics B》2006年第7期1577-1579,共3页钱锋 黄洪斌 齐观晓 沈才康 
0ne of author （Huang H B） was partially supported by the Natural Science Foundation of Jiangsu province, China （Grant No BK2005062）.Acknowledgement We thank Professor Tian G S for discussion
Based on Bogoliubov＇s truncated Hamiltonian HB for a weakly interacting Bose system, and adding a U（1） symmetry breaking term √V（λα0＋λα0^＋） to HB, we show by using the coherent state theory and the mean-fi...
关键词：BEC U（1） symmetry breaking generalized SU（1 1） coherent state 
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