与激光的原理相反,基于该类方案制成的器件又称为反激光(Anti-laser)。同年,Stefano Longhi提出了将CPA和激光结合起来的方案,这类器件可同时实现相干完美吸收和相干波的出射,即PT对称激光吸收体(PT-symmetric laser absorber)。鉴于完美吸收这种突破性的特性,这两种方案为之后的广泛应用奠定了基础。 (CPA也是更早一些...
这篇文章将Kane-Mele model进行相应的修改,往在位能里加入了gain and loss,从而将厄米系统变成了相应的非厄米系统,以得到复本征值,并就非厄米系统进行相应的一些研究,The resulting complex-eigenvalued edge state is robust against defects due to the topological protection.此外,In photonics, such an effect ...
New examples of (2 脳 2)-matrix quasi-exactly solvable operators are constructed with the emphasis set on PT-symmetric Hamiltonians.Yves BrihayeAncilla NininahazweBhabani PrasadJournal of Physics: A Mathematical & TheoreticalBrihaye, Y., Nininahazwe, A. and Prasad Mandal, B. (2007) PT-...
代表性创新成果 1.X. Q. Bai, R. C. Yang, et al. Dynamics and manipulation of Airy beam in fractional system with diffraction modulation and PT-symmetric potential .Nonlinear Dynamics, 111:4577–4591 (2023). 2.X...
$\\mathcal{PT}$-symmetric mode-locking Parity-time ($\\mathcal{PT}$) symmetry is one of the most importantaccomplishments in optics over the past decade. Here the concept of$\\mathcal{PT}$ mode-locking of a laser is introduced, in which active phaselocking of cavity axial mod... S...
We propose a new type of wireless displacement sensor based on the concept of parity-time (PT)-symmetry. The PT-symmetric wireless sensor consists of a -RLC tank (reader) and a RLC (tag) tank, which are inductively coupled to fulfill the PT-symmetry condition. Specifically, when this wirel...
Recently, Wei and his colleagues reported on a breakthrough of the asymmetric polarization switching in an anti-PT symmetric system, and applied this phenomenon as an on-chip chiral polarizer[12]. The research group makes ...
(Equation presented)-Symmetric-Breaking Chaos in Optomechanics We demonstrate PT-symmetry-breaking chaos in an optomechanical system, which features an ultralow driving threshold. In principle, this chaos will emerge once a driving laser is applied to the cavity mode and lasts for a period of time...
Symmetric=对称的;x265压制参数中的rect,表示开启rect,即开启矩形模式分割的帧间预测,rect即Rectangular=矩形,长方形---的简写。开启rect比不开rect压制速度慢很多。还可以分为非对称式(Asymmetric)切割,分别为2NxnU、NxnD、nLx2N及nRx2N(nX:表示较短的边的位置)--这段话理解不了可以不用管,当成天书即可。这种非...
对于PT对称系统我们讲了很多,在复折射率系统中我们也对孤子结构进行了数值实现。但更有实际意义的耦合系统中的非线性行为还缺一个分析,这里我们进行补足。 参考:Phys. Rev. A 85, 063837 (2012) - Optical solitons in $\mathcal{PT}$-symmetric nonlinear couplers with gain and loss (aps.org) 一. 模型...