北京计算科学研究中心赵楠团队在气体核磁共振系统中观测到了由自旋扩散效应导致的宇称-时间(PT)对称破缺现象,并演示了如何利用PT破缺相的特性实现抗干扰的稳定原子磁力仪。研究成果以“Stable Atomic Magnetometer in Parity-Time Symmetry Bro...
We observe additional phases\nwith preserved or `weakly' broken PT symmetry, and an unconventional transition\nfrom a high-noise thermal state to a low-amplitude lasing state with broken\nsymmetry and strongly reduced fluctuations. We illustrate these effects here\nfor the specific example of ...
从这个模型的简单分析可知,非厄米部分的出现改变了能谱的性质——使其有出现复能谱的可能性,这也意味着出现了PT对称破缺。换句话说,具有PT对称的哈密顿量,也可能出现全实能谱(全PT对称(exact,没找到太恰当的翻译))和出现共轭复能谱对(PT对称破缺(broken))两种情况。 二. 建立一套符合非厄米体系特别是PT对称...
In this paper, we numerically investigate the PT symmetry of an open system composed of a macroscopic/microscopic laser interacting with an empty optical cavity. In the model, we take into account the strong light–particle interaction, which makes the adiabatic elimination of the medium polarization...
[13] Zhang X L, Jiang T, Chan C T. Dynamically encircling an exceptional point in anti-parity-time symmetric systems: Asymmetric mode switching for symmetry-broken modes. Light Sci Appl, 2019, 8, 88 《半导体学报》是...
The eigenspectrum of a parity-time (PT)-symmetric Hamiltonian is either completely real, or formed by complex conjugate pairs, depending on the symmetry of its eigenstates1,2,3. By tuning system parameters, the PT symmetry of eigenstates can be spontaneously broken across critical (or exceptional...
Unfortunately, Englert's model did not solve the problem of runaway modes, and the corresponding quantum theory had ghost states. It is shown here that Englert's Hamiltonian is PT symmetric, and that the problems with his model arise because the PT symmetry is broken at both the classical ...
It is shown that the symmetry underlying the potentials so generated and the original one is nonlinear pseudosupersymmetry. We also show that this formalism can be used to generate a larger class of new solvable potentials when applied to non-Hermitian systems. 展开全部 机器翻译 参考文献(68...
Low-threshold surface plasmon amplification from a gain-assisted core-shell nanoparticle with broken symmetry. J. Opt. 15, 105001 (2013). Article ADS CAS Google Scholar Download references Acknowledgements This work was supported by Hong Kong Research Grant Council (grant no. AoE/P-02/12, ...
is not sufficiently large, theMzcannot be fully switched. The damping-like torque from the spin-Hall effect can give us a reasonable explanation of this phenomenon, in which case the perpendicular effective fields are formed by the damping-like torque with the symmetry broken by theHx(ref.7)...