Nodurft Ian, Rodriguez Perez Alejandro, Naimipour Naveed, Shaw Harry C
Peraton, Reston, VA 20190, USA.
NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD 20771, USA.
Entropy (Basel). 2025 Jan 1;27(1):27. doi: 10.3390/e27010027.
Polarization mode dispersion can introduce quantum decoherence in polarization encoded information, limiting the range of quantum communications protocols. Therefore, strategies to nullify the effect would reduce quantum decoherence and potentially increase the operational range of such technology. We constructed a quantum model of polarization mode dispersion alongside a two-level absorbing material. The two-level material serves to destructively measure one of two orthogonal polarization modes, thus projecting the polarization onto the other state. The theoretical results are supported by a numerical simulation in Mathematica Documentation where we compare the evolution of the polarization state with and without the absorbing material. We find that this strategy is effective in suppressing the effects of polarization mode dispersion, and that this method produces a global phase shift related to the waveguide's birefringent properties.
偏振模色散会在偏振编码信息中引入量子退相干，限制量子通信协议的范围。因此，消除这种影响的策略将减少量子退相干，并有可能增加此类技术的运行范围。我们构建了一个与二能级吸收材料一起的偏振模色散量子模型。二能级材料用于对两个正交偏振模之一进行破坏性测量，从而将偏振投影到另一个状态。理论结果得到了Mathematica文档中的数值模拟的支持，在该模拟中我们比较了有无吸收材料时偏振态的演化。我们发现该策略在抑制偏振模色散的影响方面是有效的，并且该方法会产生与波导双折射特性相关的全局相移。
