Zobrazeno 1 - 10
of 355
pro vyhledávání: '"Xu Chunling"'
Publikováno v:
Journal of Aeronautical Materials, Vol 43, Iss 4, Pp 94-101 (2023)
Aiming at the problem that the fatigue performance of aeroengine blade leading edge was seriously degraded after foreign object damage（FOD）, the surface of TC4 titanium alloy thin wall specimen was treated by laser shock/mechanical shot peening,
Externí odkaz:
https://doaj.org/article/3b5b557be8614cd7a3c74691be7ee22d
Publikováno v:
Journal of Aeronautical Materials, Vol 41, Iss 4, Pp 75-82 (2021)
For the TC17 titanium alloy, the influence of the leading end angle of the mandrel on the expansion strengthening effect of the hole structure was studied, the surface integrity of the hole expansion strengthened under different process parameters wa
Externí odkaz:
https://doaj.org/article/553f3136ef0a4f51b7f7012c0526a762
Autor:
Xie, Dong, Xu, Chunling
Nonreciprocity can not only generate quantum resources, but also shield noise and reverse interference from driving signals. We investigate the advantages of nonreciprocal coupling in sensing a driving signal. In general, we find that the nonreciproc
Externí odkaz:
http://arxiv.org/abs/2407.14739
Publikováno v:
Journal of Aeronautical Materials, Vol 40, Iss 1, Pp 81-86 (2020)
The fatigue life of GH4169 superalloy plate with central hole was tested at 663 MPa/20 ℃ before and after cold expansion（CE）. The fatigue fractures, the evolution of residual stress fields and surface morphology were respectively analyzed by sc
Externí odkaz:
https://doaj.org/article/49e5d1feeaae49ea92d6a8cdaf8464a7
Quantum metrology in a driven-dissipation down-conversion system beyond the parametric approximation
Autor:
Xie, Dong, Xu, Chunling
We investigate quantum metrology in a degenerate down-conversion system composed of a pump mode and two degenerate signal modes. In the conventional parametric approximation, the pump mode is assumed to be constant, not a quantum operator. We obtain
Externí odkaz:
http://arxiv.org/abs/2404.15898
Autor:
Xie, Dong, Xu, Chunling
Improving the measurement precision of low temperature is significant in fundamental science and advanced quantum technology application. However, the measurement precision of temperature $T$ usually diverges as $T$ tends to 0. Here, by utilizing a h
Externí odkaz:
http://arxiv.org/abs/2312.00549
Autor:
Xie, Dong, Xu, Chunling
Tripartite interactions play a fundamental role in the quantum information processing and quantum technology. However, it is generally difficult to realize strong tripartite coupling. We investigate the estimation of a tripartite coupling strength in
Externí odkaz:
http://arxiv.org/abs/2305.12435
Autor:
Xie, Dong, Xu, Chunling
Publikováno v:
Phys. Rev. A 108, 022219 (2023)
Exceptional point (EP) denotes the non-Hermitian degeneracy, in which both eigenvalues and eigenstates become identical. By the conventional local Markovian master equation, EP can be constructed by parity-time (PT) or anti-PT symmetry in a system co
Externí odkaz:
http://arxiv.org/abs/2304.00518
Publikováno v:
Results in Physics, 50, 106575 (2023)
The quantum version of a special classical Wheatstone bridge built with a boundary-driven spin system has recently been proposed. We propose a quantum Wheatstone bridge consisting of Bose systems, which can simulate the general classical Wheatstone b
Externí odkaz:
http://arxiv.org/abs/2208.06800
Publikováno v:
Results in Physics, 42, 105957 (2022)
We mainly investigate the quantum measurement of Kerr nonlinearity in the driven-dissipative system. Without the dissipation, the measurement precision of the nonlinearity parameter $\chi$ scales as "super-Heisenberg scaling" $1/N^2$ with $N$ being t
Externí odkaz:
http://arxiv.org/abs/2204.05577